Mercurial > dovecot > original-hg > dovecot-1.2
view src/lib/sendfile-util.c @ 1329:ae229b7acb4c HEAD
Mailbox names are now sent through imap-quoter instead of just escaping it.
This means that mailbox names that would require escapes are instead sent
as literals now.
author | Timo Sirainen <tss@iki.fi> |
---|---|
date | Wed, 02 Apr 2003 05:05:38 +0300 |
parents | 69d922a1d051 |
children | 04b81672c3a3 |
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/* kludge a bit to remove _FILE_OFFSET_BITS definition from config.h. It's required to be able to include sys/sendfile.h with Linux. */ #include "../../config.h" #undef HAVE_CONFIG_H #ifdef HAVE_LINUX_SENDFILE # undef _FILE_OFFSET_BITS #endif #include "lib.h" #include "sendfile-util.h" #ifdef HAVE_LINUX_SENDFILE #include <sys/sendfile.h> ssize_t safe_sendfile(int out_fd, int in_fd, uoff_t *offset, size_t count) { /* REMEBER: uoff_t and off_t may not be of same size. */ off_t safe_offset; ssize_t ret; /* make sure given offset fits into off_t */ if (sizeof(off_t) * CHAR_BIT == 32) { /* 32bit off_t */ if (*offset >= 2147483647L) { errno = EINVAL; return -1; } if (count > 2147483647L - *offset) count = 2147483647L - *offset; } else { /* they're most likely the same size. if not, fix this code later */ i_assert(sizeof(off_t) == sizeof(uoff_t)); if (*offset >= OFF_T_MAX) { errno = EINVAL; return -1; } if (count > OFF_T_MAX - *offset) count = OFF_T_MAX - *offset; } safe_offset = (off_t)*offset; ret = sendfile(out_fd, in_fd, &safe_offset, count); *offset = (uoff_t)safe_offset; return ret; } #elif defined(HAVE_FREEBSD_SENDFILE) #include <sys/socket.h> #include <sys/uio.h> ssize_t safe_sendfile(int out_fd, int in_fd, uoff_t *offset, size_t count) { struct sf_hdtr hdtr; off_t sbytes; int ret; i_assert(count <= SSIZE_T_MAX); memset(&hdtr, 0, sizeof(hdtr)); ret = sendfile(in_fd, out_fd, *offset, count, &hdtr, &sbytes, 0); *offset += sbytes; if (ret == 0 || (ret == 0 && errno == EAGAIN && sbytes > 0)) return (ssize_t)sbytes; else { if (errno == ENOTSOCK) { /* out_fd wasn't a socket. behave as if sendfile() wasn't supported at all. */ errno = EINVAL; } return -1; } } #elif defined (HAVE_SOLARIS_SENDFILEV) #include <sys/sendfile.h> #include "network.h" ssize_t safe_sendfile(int out_fd, int in_fd, uoff_t *offset, size_t count) { struct sendfilevec vec; size_t sbytes; ssize_t ret; i_assert(count <= SSIZE_T_MAX); /* outfd must be socket, or at least some Solaris versions will kernel panic */ if (net_getsockname(out_fd, NULL, NULL) < 0) { errno = EINVAL; return -1; } vec.sfv_fd = in_fd; vec.sfv_flag = 0; vec.sfv_off = *offset; vec.sfv_len = count; ret = sendfilev(out_fd, &vec, 1, &sbytes); *offset += sbytes; if (ret >= 0 || (ret < 0 && errno == EAGAIN && sbytes > 0)) return (ssize_t)sbytes; else return -1; } #else ssize_t safe_sendfile(int out_fd __attr_unused__, int in_fd __attr_unused__, uoff_t *offset __attr_unused__, size_t count __attr_unused__) { errno = EINVAL; return -1; } #endif