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Code

tdb: Protect against EINTR

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Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This commit is contained in:
Volker Lendecke 2017-08-23 12:00:00 +02:00 committed by Jeremy Allison
parent ab132ba7e5
commit 3e7efbfb36
1 changed files with 24 additions and 3 deletions
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27
lib/tdb/common/io.c
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@ -52,27 +52,48 @@ static bool tdb_adjust_offset(struct tdb_context *tdb, off_t *off)
static ssize_t tdb_pwrite(struct tdb_context *tdb, const void *buf,
size_t count, off_t offset)
{
ssize_t ret;
if (!tdb_adjust_offset(tdb, &offset)) {
return -1;
}
return pwrite(tdb->fd, buf, count, offset);
do {
ret = pwrite(tdb->fd, buf, count, offset);
} while ((ret == -1) && (errno == EINTR));
return ret;
}
static ssize_t tdb_pread(struct tdb_context *tdb, void *buf,
size_t count, off_t offset)
{
ssize_t ret;
if (!tdb_adjust_offset(tdb, &offset)) {
return -1;
}
return pread(tdb->fd, buf, count, offset);
do {
ret = pread(tdb->fd, buf, count, offset);
} while ((ret == -1) && (errno == EINTR));
return ret;
}
static int tdb_ftruncate(struct tdb_context *tdb, off_t length)
{
ssize_t ret;
if (!tdb_adjust_offset(tdb, &length)) {
return -1;
}
return ftruncate(tdb->fd, length);
do {
ret = ftruncate(tdb->fd, length);
} while ((ret == -1) && (errno == EINTR));
return ret;
}
static int tdb_fstat(struct tdb_context *tdb, struct stat *buf)