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

annotate src/lib/nfs-workarounds.c @ 6813:575235932194 HEAD

nfs_safe_link(): Support linking files without original link count=1. Use it when copying maildir files, but only if mail_nfs_storage=yes.

author	Timo Sirainen <tss@iki.fi>
date	Fri, 16 Nov 2007 03:50:15 +0200
parents	9bc620b934f4
children	8573124a89b3

rev	line source
6429 65c69a53a7be Replaced my Copyright notices. The year range always ends with 2007 now. Timo Sirainen <tss@iki.fi> parents: 6411 diff changeset	1 /* Copyright (c) 2006-2007 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
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	37 #ifdef __linux__
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
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	40
4225 abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	41 static int
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	42 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	43 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	44 {
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	45 const char *dir = NULL;
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	46 struct stat st;
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	47 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	48 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	49
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	50 t_push();
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	51 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	52 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	53 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	54 break;
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	55
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	56 /* ESTALE: Some operating systems may fail with this if they
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	57 can't internally revalidating the NFS handle. It may also
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	58 happen if the parent directory has been deleted. If the
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	59 directory still exists, try reopening the file. */
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	60 if (dir == NULL) {
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	61 dir = strrchr(path, '/');
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	62 if (dir == NULL)
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	63 break;
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	64 dir = t_strdup_until(path, dir);
6797 a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	65 }
a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	66 nfs_flush_attr_cache(dir, FALSE);
4071 cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	67 if (stat(dir, &st) < 0) {
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	68 /* maybe it's gone or something else bad happened to
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	69 it. in any case we can't open the file, so fail
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	70 with the original ESTALE error and let our caller
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	71 handle it. */
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	72 errno = ESTALE;
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	73 break;
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	74 }
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	75
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	76 /* directory still exists, try reopening */
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	77 }
cd3d26cf124a Renamed safe-open.* to nfs-workarounds., safe_open() to nfs_safe_open() and Timo Sirainen <tss@iki.fi>* parents: diff changeset	78 t_pop();
4225 abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	79 return ret;
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
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	82 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	83 int flags;
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	84 int fd;
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	85 };
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	86
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	87 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	88 {
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	89 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	90
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	91 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	92 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	93 }
4225 abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	94
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	95 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	96 {
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	97 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	98
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	99 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	100
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	101 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	102 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	103 return -1;
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	104
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	105 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	106 }
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	107
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	108 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	109 {
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	110 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	111
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	112 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	113 }
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	114
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	115 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	116 {
abdef9d86a94 Added nfs_safe_stat() to transparently work around ESTALE with stat(). Timo Sirainen <timo.sirainen@movial.fi> parents: 4071 diff changeset	117 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	118 }
5968 885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	119
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	120 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	121 {
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	122 struct stat *buf = context;
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	123
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	124 return lstat(path, buf);
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	125 }
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	126
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	127 int nfs_safe_lstat(const char path, struct stat buf)
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	128 {
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	129 return nfs_safe_do(path, nfs_safe_lstat_callback, buf);
885ed4d5c51d Added nfs_safe_lstat() Timo Sirainen <tss@iki.fi> parents: 4225 diff changeset	130 }
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	131
6813 575235932194 nfs_safe_link(): Support linking files without original link count=1. Use it Timo Sirainen <tss@iki.fi> parents: 6811 diff changeset	132 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	133 {
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	134 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	135 nlink_t orig_link_count = 1;
6811 9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	136
6813 575235932194 nfs_safe_link(): Support linking files without original link count=1. Use it Timo Sirainen <tss@iki.fi> parents: 6811 diff changeset	137 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	138 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	139 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	140 orig_link_count = st.st_nlink;
6811 9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	141 }
6813 575235932194 nfs_safe_link(): Support linking files without original link count=1. Use it Timo Sirainen <tss@iki.fi> parents: 6811 diff changeset	142
6811 9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	143 if (link(oldpath, newpath) == 0) {
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	144 #ifndef __FreeBSD__
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	145 return 0;
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	146 #endif
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	147 /* 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	148 success. */
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	149 } else if (errno != EEXIST)
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	150 return -1;
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	151
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	152 /* 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	153 if (stat(oldpath, &st) < 0)
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	154 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	155 if (st.st_nlink == orig_link_count) {
6811 9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	156 errno = EEXIST;
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	157 return -1;
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	158 }
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	159 return 0;
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	160 }
9bc620b934f4 Added nfs_safe_link(). Timo Sirainen <tss@iki.fi> parents: 6797 diff changeset	161
6797 a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	162 static bool nfs_flush_fchown_uid(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	163 {
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	164 struct stat st;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	165
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	166 if (fstat(fd, &st) < 0) {
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	167 if (errno == ESTALE) {
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	168 /* ESTALE causes the OS to flush the attr cache */
6797 a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	169 return FALSE;
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	170 }
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	171 i_error("nfs_flush_fchown_uid: fstat(%s) failed: %m", path);
6797 a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	172 return TRUE;
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	173 }
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	174 if (fchown(fd, st.st_uid, (gid_t)-1) < 0) {
6797 a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	175 if (errno == ESTALE) {
a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	176 return FALSE;
a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	177 }
a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	178 if (errno == EACCES \|\| errno == EPERM) {
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	179 /* attr cache is flushed */
6797 a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	180 return TRUE;
5970 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
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	183 i_error("nfs_flush_fchown_uid: fchown(%s) failed: %m", path);
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	184 }
6797 a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	185 return TRUE;
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	186 }
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	187
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	188 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	189 {
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	190 struct stat st;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	191
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	192 if (stat(path, &st) < 0) {
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	193 if (errno == ESTALE) {
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	194 /* 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	195 return;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	196 }
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	197 if (errno != ENOENT) {
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	198 i_error("nfs_flush_chown_uid: stat(%s) failed: %m",
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	199 path);
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	200 return;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	201 }
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	202
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	203 /* flush a negative cache entry. use effective UID to chown.
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	204 it probably doesn't really matter what UID is used, because
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	205 as long as we're not root we don't have permission to really
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	206 change it anyway */
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	207 st.st_uid = geteuid();
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	208 }
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	209 if (chown(path, st.st_uid, (gid_t)-1) < 0) {
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	210 if (errno == ESTALE \|\| errno == EACCES \|\|
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	211 errno == EPERM \|\| errno == ENOENT) {
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	212 /* attr cache is flushed */
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	213 return;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	214 }
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	215 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	216 }
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	217 }
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	218
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	219 #ifdef READ_CACHE_FLUSH_FCNTL
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	220 static void nfs_flush_fcntl(const char *path, int fd, int old_lock_type)
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	221 {
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	222 struct flock fl;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	223 int ret;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	224
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	225 /* 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	226 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	227 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	228 only when read/write locking succeeded. */
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	229 fl.l_type = old_lock_type != F_UNLCK ? old_lock_type : F_RDLCK;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	230 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	231 fl.l_start = 0;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	232 fl.l_len = 0;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	233
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	234 alarm(60);
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	235 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	236 alarm(0);
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	237
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	238 if (ret < 0) {
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	239 i_error("nfs_flush_fcntl: fcntl(%s, F_RDLCK) failed: %m", path);
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	240 return;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	241 }
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	242
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	243 if (old_lock_type == F_UNLCK) {
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	244 fl.l_type = F_UNLCK;
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	245 (void)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	246 }
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	247 }
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	248 #endif
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	249
6797 a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	250 void nfs_flush_attr_cache(const char *path, bool flush_dir)
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	251 {
6797 a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	252 const char *p;
a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	253
a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	254 if (flush_dir) {
a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	255 p = strrchr(path, '/');
a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	256 if (p == NULL)
a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	257 nfs_flush_chown_uid(".");
a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	258 else {
a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	259 t_push();
a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	260 nfs_flush_chown_uid(t_strdup_until(path, p));
a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	261 t_pop();
a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	262 }
a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	263 }
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	264 nfs_flush_chown_uid(path);
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	265 }
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	266
6797 a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	267 bool nfs_flush_attr_cache_fd(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	268 {
6797 a59deefc552f NFS attribute cache flushing fixes. nfs_flush_attr_cache() takes now Timo Sirainen <tss@iki.fi> parents: 6429 diff changeset	269 return nfs_flush_fchown_uid(path, fd);
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	270 }
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	271
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	272 void nfs_flush_read_cache(const char *path, int fd,
6411 6a64e64fa3a3 Renamed __attr___ to ATTR_. Renamed __attrs_used__ to ATTRS_DEFINED. Timo Sirainen <tss@iki.fi> parents: 5970 diff changeset	273 int lock_type ATTR_UNUSED,
6a64e64fa3a3 Renamed __attr___ to ATTR_. Renamed __attrs_used__ to ATTRS_DEFINED. Timo Sirainen <tss@iki.fi> parents: 5970 diff changeset	274 bool just_locked ATTR_UNUSED)
5970 a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	275 {
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	276 #ifdef READ_CACHE_FLUSH_FCNTL
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	277 if (!just_locked)
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	278 nfs_flush_fcntl(path, fd, lock_type);
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	279 #else
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	280 /* FreeBSD, Solaris */
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	281 nfs_flush_fchown_uid(path, fd);
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	282 #endif
a290b84d144a Added nfs_flush_attr_cache() and nfs_flush_read_cache(). Timo Sirainen <tss@iki.fi> parents: 5968 diff changeset	283 }

Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/lib/nfs-workarounds.c @ 6813:575235932194 HEAD