dovecot/original-hg/dovecot-1.2: src/lib/nfs-workarounds.c annotate

annotate src/lib/nfs-workarounds.c @ 8590:b9faf4db2a9f HEAD

Updated copyright notices to include year 2009.

author	Timo Sirainen <tss@iki.fi>
date	Tue, 06 Jan 2009 09:25:38 -0500
parents	9bcc2dd5f17f
children	00cd9aacd03c

rev	line source
8590 b9faf4db2a9f Updated copyright notices to include year 2009. Timo Sirainen <tss@iki.fi> parents: 8476 diff changeset	1 /* Copyright (c) 2006-2009 Dovecot authors, see the included COPYING file */
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	2
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	3 /*
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	4 These tests were done with various Linux 2.6 kernels, FreeBSD 6.2 and
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	5 Solaris 8 and 10.
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	6
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	7 Attribute cache is usually flushed with chown()ing or fchown()ing the file.
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	8 The safest way would be to use uid=-1 gid=-1, but this doesn't work with
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	9 Linux (it does with FreeBSD 6.2 and Solaris). So we'll first get the
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	10 file's owner and use it. As long as we're not root the file's owner can't
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	11 change accidentally. If would be possible to also use chmod()/fchmod(), but
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	12 that's riskier since it could actually cause an unwanted change.
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	13
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	14 Write cache can be flushed with fdatasync(). It's all we need, but other
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	15 tested alternatives are: fcntl locking (Linux 2.6, Solaris),
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	16 fchown() (Solaris) and dup()+close() (Linux 2.6, Solaris).
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	17
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	18 Read cache flushing is more problematic. There's no universal way to do it.
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	19 The working methods are:
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	20
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	21 Linux 2.6: fcntl(), O_DIRECT
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	22 Solaris: fchown(), fcntl(), dup()+close()
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	23 FreeBSD 6.2: fchown()
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	24
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	25 fchown() can be easily used for Solaris and FreeBSD, but Linux requires
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	26 playing with locks. O_DIRECT requires CONFIG_NFS_DIRECTIO to be enabled, so
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	27 we can't always use it.
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	28 */
4071 cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	29
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	30 #include "lib.h"
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	31 #include "nfs-workarounds.h"
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	32
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	33 #include <fcntl.h>
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	34 #include <unistd.h>
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	35 #include <sys/stat.h>
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	36
6829 dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	37 #if defined (__linux__) \|\| defined(__sun)
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	38 # define READ_CACHE_FLUSH_FCNTL
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	39 #endif
6820 6dfb3969baae FreeBSD and Solaris supports flushing attribute cache with chown(uid=-1, Timo Sirainen <tss@iki.fi> parents: 6819 diff changeset	40 #if defined(__FreeBSD__) \|\| defined(__sun)
6dfb3969baae FreeBSD and Solaris supports flushing attribute cache with chown(uid=-1, Timo Sirainen <tss@iki.fi> parents: 6819 diff changeset	41 # define ATTRCACHE_FLUSH_CHOWN_UID_1
6dfb3969baae FreeBSD and Solaris supports flushing attribute cache with chown(uid=-1, Timo Sirainen <tss@iki.fi> parents: 6819 diff changeset	42 #endif
6dfb3969baae FreeBSD and Solaris supports flushing attribute cache with chown(uid=-1, Timo Sirainen <tss@iki.fi> parents: 6819 diff changeset	43
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	44 static void nfs_flush_file_handle_cache_parent_dir(const char *path);
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	45
4225 abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	46 static int
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	47 nfs_safe_do(const char path, int (callback)(const char path, void context),
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	48 void *context)
4071 cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	49 {
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	50 unsigned int i;
4225 abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	51 int ret;
4071 cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	52
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	53 for (i = 1;; i++) {
4225 abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	54 ret = callback(path, context);
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	55 if (ret == 0 \|\| errno != ESTALE \|\| i == NFS_ESTALE_RETRY_COUNT)
4071 cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	56 break;
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	57
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	58 /* ESTALE: Some operating systems may fail with this if they
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	59 can't internally revalidate the NFS file handle. Flush the
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	60 file handle and try again */
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	61 nfs_flush_file_handle_cache(path);
4071 cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	62 }
4225 abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	63 return ret;
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	64 }
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	65
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	66 struct nfs_safe_open_context {
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	67 int flags;
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	68 int fd;
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	69 };
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	70
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	71 static int nfs_safe_open_callback(const char path, void context)
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	72 {
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	73 struct nfs_safe_open_context *ctx = context;
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	74
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	75 ctx->fd = open(path, ctx->flags);
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	76 return ctx->fd == -1 ? -1 : 0;
4071 cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	77 }
4225 abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	78
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	79 int nfs_safe_open(const char *path, int flags)
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	80 {
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	81 struct nfs_safe_open_context ctx;
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	82
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	83 i_assert((flags & O_CREAT) == 0);
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	84
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	85 ctx.flags = flags;
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	86 if (nfs_safe_do(path, nfs_safe_open_callback, &ctx) < 0)
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	87 return -1;
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	88
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	89 return ctx.fd;
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	90 }
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	91
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	92 static int nfs_safe_stat_callback(const char path, void context)
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	93 {
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	94 struct stat *buf = context;
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	95
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	96 return stat(path, buf);
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	97 }
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	98
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	99 int nfs_safe_stat(const char path, struct stat buf)
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	100 {
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	101 return nfs_safe_do(path, nfs_safe_stat_callback, buf);
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	102 }
5968 885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	103
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	104 static int nfs_safe_lstat_callback(const char path, void context)
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	105 {
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	106 struct stat *buf = context;
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	107
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	108 return lstat(path, buf);
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	109 }
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	110
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	111 int nfs_safe_lstat(const char path, struct stat buf)
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	112 {
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	113 return nfs_safe_do(path, nfs_safe_lstat_callback, buf);
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	114 }
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	115
6813 575235932194 nfs_safe_link(): Support linking files without original link count=1. Use it Timo Sirainen <tss@iki.fi> parents: 6811 diff changeset	116 int nfs_safe_link(const char oldpath, const char newpath, bool links1)
6811 9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	117 {
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	118 struct stat st;
6813 575235932194 nfs_safe_link(): Support linking files without original link count=1. Use it Timo Sirainen <tss@iki.fi> parents: 6811 diff changeset	119 nlink_t orig_link_count = 1;
6811 9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	120
6813 575235932194 nfs_safe_link(): Support linking files without original link count=1. Use it Timo Sirainen <tss@iki.fi> parents: 6811 diff changeset	121 if (!links1) {
575235932194 nfs_safe_link(): Support linking files without original link count=1. Use it Timo Sirainen <tss@iki.fi> parents: 6811 diff changeset	122 if (stat(oldpath, &st) < 0)
575235932194 nfs_safe_link(): Support linking files without original link count=1. Use it Timo Sirainen <tss@iki.fi> parents: 6811 diff changeset	123 return -1;
575235932194 nfs_safe_link(): Support linking files without original link count=1. Use it Timo Sirainen <tss@iki.fi> parents: 6811 diff changeset	124 orig_link_count = st.st_nlink;
6811 9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	125 }
6813 575235932194 nfs_safe_link(): Support linking files without original link count=1. Use it Timo Sirainen <tss@iki.fi> parents: 6811 diff changeset	126
6811 9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	127 if (link(oldpath, newpath) == 0) {
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	128 #ifndef __FreeBSD__
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	129 return 0;
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	130 #endif
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	131 /* FreeBSD at least up to v6.2 converts EEXIST errors to
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	132 success. */
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	133 } else if (errno != EEXIST)
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	134 return -1;
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	135
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	136 /* We don't know if it succeeded or failed. stat() to make sure. */
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	137 if (stat(oldpath, &st) < 0)
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	138 return -1;
6813 575235932194 nfs_safe_link(): Support linking files without original link count=1. Use it Timo Sirainen <tss@iki.fi> parents: 6811 diff changeset	139 if (st.st_nlink == orig_link_count) {
6811 9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	140 errno = EEXIST;
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	141 return -1;
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	142 }
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	143 return 0;
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	144 }
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	145
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	146 static void nfs_flush_chown_uid(const char *path)
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	147 {
6820 6dfb3969baae FreeBSD and Solaris supports flushing attribute cache with chown(uid=-1, Timo Sirainen <tss@iki.fi> parents: 6819 diff changeset	148 uid_t uid;
6dfb3969baae FreeBSD and Solaris supports flushing attribute cache with chown(uid=-1, Timo Sirainen <tss@iki.fi> parents: 6819 diff changeset	149
6dfb3969baae FreeBSD and Solaris supports flushing attribute cache with chown(uid=-1, Timo Sirainen <tss@iki.fi> parents: 6819 diff changeset	150 #ifdef ATTRCACHE_FLUSH_CHOWN_UID_1
6dfb3969baae FreeBSD and Solaris supports flushing attribute cache with chown(uid=-1, Timo Sirainen <tss@iki.fi> parents: 6819 diff changeset	151 uid = (uid_t)-1;
6dfb3969baae FreeBSD and Solaris supports flushing attribute cache with chown(uid=-1, Timo Sirainen <tss@iki.fi> parents: 6819 diff changeset	152 #else
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	153 struct stat st;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	154
6820 6dfb3969baae FreeBSD and Solaris supports flushing attribute cache with chown(uid=-1, Timo Sirainen <tss@iki.fi> parents: 6819 diff changeset	155 if (stat(path, &st) == 0)
6dfb3969baae FreeBSD and Solaris supports flushing attribute cache with chown(uid=-1, Timo Sirainen <tss@iki.fi> parents: 6819 diff changeset	156 uid = st.st_uid;
6dfb3969baae FreeBSD and Solaris supports flushing attribute cache with chown(uid=-1, Timo Sirainen <tss@iki.fi> parents: 6819 diff changeset	157 else {
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	158 if (errno == ESTALE) {
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	159 /* ESTALE causes the OS to flush the attr cache */
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	160 return;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	161 }
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	162 if (likely(errno == ENOENT)) {
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	163 nfs_flush_file_handle_cache_parent_dir(path);
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	164 return;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	165 }
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	166 i_error("nfs_flush_chown_uid: stat(%s) failed: %m", path);
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	167 return;
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	168 }
6820 6dfb3969baae FreeBSD and Solaris supports flushing attribute cache with chown(uid=-1, Timo Sirainen <tss@iki.fi> parents: 6819 diff changeset	169 #endif
6dfb3969baae FreeBSD and Solaris supports flushing attribute cache with chown(uid=-1, Timo Sirainen <tss@iki.fi> parents: 6819 diff changeset	170 if (chown(path, uid, (gid_t)-1) < 0) {
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	171 if (errno == ESTALE \|\| errno == EPERM \|\| errno == ENOENT) {
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	172 /* attr cache is flushed */
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	173 return;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	174 }
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	175 if (likely(errno == ENOENT)) {
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	176 nfs_flush_file_handle_cache_parent_dir(path);
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	177 return;
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	178 }
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	179 i_error("nfs_flush_chown_uid: chown(%s) failed: %m", path);
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	180 }
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	181 }
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	182
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	183 #ifdef __FreeBSD__
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	184 static bool nfs_flush_fchown_uid(const char *path, int fd)
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	185 {
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	186 uid_t uid;
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	187 #ifndef ATTRCACHE_FLUSH_CHOWN_UID_1
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	188 struct stat st;
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	189
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	190 if (fstat(fd, &st) < 0) {
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	191 if (likely(errno == ESTALE))
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	192 return FALSE;
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	193 i_error("nfs_flush_attr_cache_fchown: fstat(%s) failed: %m",
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	194 path);
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	195 return TRUE;
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	196 }
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	197 uid = st.st_uid;
7860 85f457b9b3ad FreeBSD NFS workarounds: We called fchown() with random UID. It shouldn't Timo Sirainen <tss@iki.fi> parents: 7226 diff changeset	198 #else
85f457b9b3ad FreeBSD NFS workarounds: We called fchown() with random UID. It shouldn't Timo Sirainen <tss@iki.fi> parents: 7226 diff changeset	199 uid = (uid_t)-1;
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	200 #endif
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	201 if (fchown(fd, uid, (gid_t)-1) < 0) {
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	202 if (errno == ESTALE)
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	203 return FALSE;
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	204 if (likely(errno == EACCES \|\| errno == EPERM)) {
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	205 /* attr cache is flushed */
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	206 return TRUE;
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	207 }
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	208
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	209 i_error("nfs_flush_attr_cache_fd_locked: fchown(%s) failed: %m",
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	210 path);
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	211 }
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	212 return TRUE;
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	213 }
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	214 #endif
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	215
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	216 #ifdef READ_CACHE_FLUSH_FCNTL
8476 9bcc2dd5f17f Linux/Solaris NFS: if there are no locks, try flushing data cache by flushing attr cache. Timo Sirainen <tss@iki.fi> parents: 7860 diff changeset	217 static bool nfs_flush_fcntl(const char *path, int fd)
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	218 {
8476 9bcc2dd5f17f Linux/Solaris NFS: if there are no locks, try flushing data cache by flushing attr cache. Timo Sirainen <tss@iki.fi> parents: 7860 diff changeset	219 static bool locks_disabled = FALSE;
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	220 struct flock fl;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	221 int ret;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	222
8476 9bcc2dd5f17f Linux/Solaris NFS: if there are no locks, try flushing data cache by flushing attr cache. Timo Sirainen <tss@iki.fi> parents: 7860 diff changeset	223 if (locks_disabled)
9bcc2dd5f17f Linux/Solaris NFS: if there are no locks, try flushing data cache by flushing attr cache. Timo Sirainen <tss@iki.fi> parents: 7860 diff changeset	224 return FALSE;
9bcc2dd5f17f Linux/Solaris NFS: if there are no locks, try flushing data cache by flushing attr cache. Timo Sirainen <tss@iki.fi> parents: 7860 diff changeset	225
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	226 /* If the file was already locked, we'll just get the same lock
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	227 again. It should succeed just fine. If was was unlocked, we'll
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	228 have to get a lock and then unlock it. Linux 2.6 flushes read cache
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	229 only when read/write locking succeeded. */
6829 dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	230 fl.l_type = F_RDLCK;
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	231 fl.l_whence = SEEK_SET;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	232 fl.l_start = 0;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	233 fl.l_len = 0;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	234
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	235 alarm(60);
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	236 ret = fcntl(fd, F_SETLKW, &fl);
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	237 alarm(0);
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	238
6825 85385079b044 Use likely() and unlikely() macros to make commonly checked error handling Timo Sirainen <tss@iki.fi> parents: 6820 diff changeset	239 if (unlikely(ret < 0)) {
8476 9bcc2dd5f17f Linux/Solaris NFS: if there are no locks, try flushing data cache by flushing attr cache. Timo Sirainen <tss@iki.fi> parents: 7860 diff changeset	240 if (errno == ENOLCK) {
9bcc2dd5f17f Linux/Solaris NFS: if there are no locks, try flushing data cache by flushing attr cache. Timo Sirainen <tss@iki.fi> parents: 7860 diff changeset	241 locks_disabled = TRUE;
9bcc2dd5f17f Linux/Solaris NFS: if there are no locks, try flushing data cache by flushing attr cache. Timo Sirainen <tss@iki.fi> parents: 7860 diff changeset	242 return FALSE;
9bcc2dd5f17f Linux/Solaris NFS: if there are no locks, try flushing data cache by flushing attr cache. Timo Sirainen <tss@iki.fi> parents: 7860 diff changeset	243 }
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	244 i_error("nfs_flush_fcntl: fcntl(%s, F_RDLCK) failed: %m", path);
8476 9bcc2dd5f17f Linux/Solaris NFS: if there are no locks, try flushing data cache by flushing attr cache. Timo Sirainen <tss@iki.fi> parents: 7860 diff changeset	245 return FALSE;
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	246 }
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	247
6829 dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	248 fl.l_type = F_UNLCK;
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	249 (void)fcntl(fd, F_SETLKW, &fl);
8476 9bcc2dd5f17f Linux/Solaris NFS: if there are no locks, try flushing data cache by flushing attr cache. Timo Sirainen <tss@iki.fi> parents: 7860 diff changeset	250 return TRUE;
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	251 }
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	252 #endif
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	253
6829 dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	254 void nfs_flush_attr_cache_unlocked(const char *path)
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	255 {
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	256 int fd;
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	257
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	258 /* Try to flush the attribute cache the nice way first. */
6829 dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	259 fd = open(path, O_RDONLY);
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	260 if (fd != -1)
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	261 (void)close(fd);
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	262 else if (errno == ESTALE) {
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	263 /* this already flushed the cache */
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	264 } else {
6829 dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	265 /* most likely ENOENT, which means a negative cache hit.
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	266 flush the file handles for its parent directory. */
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	267 nfs_flush_file_handle_cache_parent_dir(path);
6829 dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	268 }
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	269 }
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	270
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	271 void nfs_flush_attr_cache_maybe_locked(const char *path)
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	272 {
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	273 nfs_flush_chown_uid(path);
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	274 }
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	275
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	276 bool nfs_flush_attr_cache_fd_locked(const char *path ATTR_UNUSED,
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	277 int fd ATTR_UNUSED)
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	278 {
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	279 #ifdef __FreeBSD__
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	280 /* FreeBSD doesn't flush attribute cache with fcntl(), so we have
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	281 to do it ourself. */
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	282 return nfs_flush_fchown_uid(path, fd);
6829 dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	283 #else
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	284 /* Linux and Solaris are fine. */
6829 dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	285 return TRUE;
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	286 #endif
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	287 }
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	288
7156 5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	289 static bool
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	290 nfs_flush_file_handle_cache_dir(const char *path, bool try_parent ATTR_UNUSED)
6819 256725979152 nfs_flush_attr_cache() doesn't take flush_dir paramter anymore. Instead the Timo Sirainen <tss@iki.fi> parents: 6816 diff changeset	291 {
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	292 #ifdef __linux__
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	293 /* chown()ing parent is the safest way to handle this */
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	294 nfs_flush_chown_uid(path);
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	295 #else
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	296 /* rmdir() is the only choice with FreeBSD and Solaris */
6825 85385079b044 Use likely() and unlikely() macros to make commonly checked error handling Timo Sirainen <tss@iki.fi> parents: 6820 diff changeset	297 if (unlikely(rmdir(path) == 0)) {
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	298 if (mkdir(path, 0700) == 0) {
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	299 i_warning("nfs_flush_file_handle_cache_dir: "
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	300 "rmdir(%s) unexpectedly "
6819 256725979152 nfs_flush_attr_cache() doesn't take flush_dir paramter anymore. Instead the Timo Sirainen <tss@iki.fi> parents: 6816 diff changeset	301 "removed the dir. recreated.", path);
256725979152 nfs_flush_attr_cache() doesn't take flush_dir paramter anymore. Instead the Timo Sirainen <tss@iki.fi> parents: 6816 diff changeset	302 } else {
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	303 i_warning("nfs_flush_file_handle_cache_dir: "
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	304 "rmdir(%s) unexpectedly "
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	305 "removed the dir. mkdir() failed: %m", path);
6819 256725979152 nfs_flush_attr_cache() doesn't take flush_dir paramter anymore. Instead the Timo Sirainen <tss@iki.fi> parents: 6816 diff changeset	306 }
6892 95caa2ab300c Ignore EEXIST errors for rmdir(). Timo Sirainen <tss@iki.fi> parents: 6858 diff changeset	307 } else if (errno == ESTALE \|\| errno == ENOTDIR \|\|
7155 dd64c0e649aa nfs_flush_file_handle_cache_dir: If rmdir() fails with EACCES, the cache is Timo Sirainen <tss@iki.fi> parents: 7086 diff changeset	308 errno == ENOTEMPTY \|\| errno == EEXIST \|\| errno == EACCES) {
6819 256725979152 nfs_flush_attr_cache() doesn't take flush_dir paramter anymore. Instead the Timo Sirainen <tss@iki.fi> parents: 6816 diff changeset	309 /* expected failures */
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	310 } else if (errno == ENOENT) {
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	311 return FALSE;
7156 5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	312 } else if (errno == EINVAL && try_parent) {
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	313 /* Solaris gives this if we're trying to rmdir() the current
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	314 directory. Work around this by temporarily changing the
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	315 current directory to the parent directory. */
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	316 char cur_path[PATH_MAX], *p;
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	317 int cur_dir_fd;
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	318 bool ret;
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	319
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	320 cur_dir_fd = open(".", O_RDONLY);
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	321 if (cur_dir_fd == -1) {
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	322 i_error("open(.) failed for: %m");
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	323 return TRUE;
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	324 }
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	325
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	326 if (getcwd(cur_path, sizeof(cur_path)) == NULL) {
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	327 i_error("nfs_flush_file_handle_cache_dir: "
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	328 "getcwd() failed");
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	329 (void)close(cur_dir_fd);
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	330 return TRUE;
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	331 }
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	332 p = strrchr(cur_path, '/');
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	333 if (p != NULL)
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	334 *p = '\0';
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	335 else {
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	336 p[0] = '/';
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	337 p[1] = '\0';
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	338 }
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	339 if (chdir(cur_path) < 0) {
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	340 i_error("nfs_flush_file_handle_cache_dir: "
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	341 "chdir() failed");
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	342 }
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	343 ret = nfs_flush_file_handle_cache_dir(path, FALSE);
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	344 if (fchdir(cur_dir_fd) < 0)
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	345 i_error("fchdir() failed: %m");
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	346 (void)close(cur_dir_fd);
5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	347 return ret;
6819 256725979152 nfs_flush_attr_cache() doesn't take flush_dir paramter anymore. Instead the Timo Sirainen <tss@iki.fi> parents: 6816 diff changeset	348 } else {
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	349 i_error("nfs_flush_file_handle_cache_dir: "
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	350 "rmdir(%s) failed: %m", path);
6819 256725979152 nfs_flush_attr_cache() doesn't take flush_dir paramter anymore. Instead the Timo Sirainen <tss@iki.fi> parents: 6816 diff changeset	351 }
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	352 #endif
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	353 return TRUE;
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	354 }
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	355
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	356 static void nfs_flush_file_handle_cache_parent_dir(const char *path)
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	357 {
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	358 const char *p;
6829 dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	359
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	360 p = strrchr(path, '/');
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	361 if (p == NULL)
7156 5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	362 nfs_flush_file_handle_cache_dir(".", TRUE);
7226 e6693a0ec8e1 Renamed T_FRAME_BEGIN/END to T_BEGIN/END. Removed T_FRAME() macro and Timo Sirainen <tss@iki.fi> parents: 7156 diff changeset	363 else T_BEGIN {
7156 5dda06c19eb1 Fixed nfs_flush_file_handle_cache() for Solaris when trying to flush the Timo Sirainen <tss@iki.fi> parents: 7155 diff changeset	364 nfs_flush_file_handle_cache_dir(t_strdup_until(path, p), TRUE);
7226 e6693a0ec8e1 Renamed T_FRAME_BEGIN/END to T_BEGIN/END. Removed T_FRAME() macro and Timo Sirainen <tss@iki.fi> parents: 7156 diff changeset	365 } T_END;
6857 41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	366 }
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	367
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	368 void nfs_flush_file_handle_cache(const char *path)
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	369 {
41911abe6fa7 NFS cache flushing updates. Timo Sirainen <tss@iki.fi> parents: 6829 diff changeset	370 nfs_flush_file_handle_cache_parent_dir(path);
6819 256725979152 nfs_flush_attr_cache() doesn't take flush_dir paramter anymore. Instead the Timo Sirainen <tss@iki.fi> parents: 6816 diff changeset	371 }
256725979152 nfs_flush_attr_cache() doesn't take flush_dir paramter anymore. Instead the Timo Sirainen <tss@iki.fi> parents: 6816 diff changeset	372
6829 dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	373 void nfs_flush_read_cache_locked(const char *path ATTR_UNUSED,
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	374 int fd ATTR_UNUSED)
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	375 {
6829 dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	376 #ifdef READ_CACHE_FLUSH_FCNTL
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	377 /* already flushed when fcntl() was called */
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	378 #else
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	379 /* we can only hope that underlying filesystem uses micro/nanosecond
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	380 resolution so that attribute cache flushing notices mtime changes */
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	381 nfs_flush_attr_cache_fd_locked(path, fd);
dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	382 #endif
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	383 }
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	384
6829 dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	385 void nfs_flush_read_cache_unlocked(const char *path, int fd)
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	386 {
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	387 #ifdef READ_CACHE_FLUSH_FCNTL
8476 9bcc2dd5f17f Linux/Solaris NFS: if there are no locks, try flushing data cache by flushing attr cache. Timo Sirainen <tss@iki.fi> parents: 7860 diff changeset	388 if (!nfs_flush_fcntl(path, fd))
9bcc2dd5f17f Linux/Solaris NFS: if there are no locks, try flushing data cache by flushing attr cache. Timo Sirainen <tss@iki.fi> parents: 7860 diff changeset	389 nfs_flush_attr_cache_fd_locked(path, fd);
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	390 #else
6829 dbab5e592577 NFS cache flushing APIs changed and backend implements it a bit differently. Timo Sirainen <tss@iki.fi> parents: 6825 diff changeset	391 nfs_flush_read_cache_locked(path, fd);
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	392 #endif
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	393 }

Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/lib/nfs-workarounds.c @ 8590:b9faf4db2a9f HEAD