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authorMichal Zidek <mzidek@redhat.com>2013-08-21 15:26:36 +0200
committerJakub Hrozek <jhrozek@redhat.com>2013-08-22 19:42:31 +0200
commit1f7fb30cc25765e54841e5d5f4192c12e3b29a16 (patch)
treef4e642f45178ff22cefd3b81d979f2c6aa5b0a4d
parent884b1305806847e2e05a07988b77d3b5f77a37bc (diff)
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mmap_cache: Use sss_atomic_write_s instead of write.
Use sss_atomic_write_s() instead of write() in sss_mc_save_corrupted(). Also unlink() the file if no data were written. It is better to use sss_atomic_write_s instead of write
-rw-r--r--src/responder/nss/nsssrv_mmap_cache.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/src/responder/nss/nsssrv_mmap_cache.c b/src/responder/nss/nsssrv_mmap_cache.c
index fced018e..1f584a29 100644
--- a/src/responder/nss/nsssrv_mmap_cache.c
+++ b/src/responder/nss/nsssrv_mmap_cache.c
@@ -99,7 +99,7 @@ static void sss_mc_save_corrupted(struct sss_mc_ctx *mc_ctx)
{
int err;
int fd = -1;
- ssize_t written;
+ ssize_t written = -1;
char *file = NULL;
TALLOC_CTX *tmp_ctx;
@@ -132,7 +132,7 @@ static void sss_mc_save_corrupted(struct sss_mc_ctx *mc_ctx)
goto done;
}
- written = write(fd, mc_ctx->mmap_base, mc_ctx->mmap_size);
+ written = sss_atomic_write_s(fd, mc_ctx->mmap_base, mc_ctx->mmap_size);
if (written != mc_ctx->mmap_size) {
if (written == -1) {
err = errno;
@@ -151,6 +151,15 @@ static void sss_mc_save_corrupted(struct sss_mc_ctx *mc_ctx)
done:
if (fd != -1) {
close(fd);
+ if (written == -1) {
+ err = unlink(file);
+ if (err != 0) {
+ err = errno;
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ ("Failed to remove file '%s': %s.\n", file,
+ strerror(err)));
+ }
+ }
}
talloc_free(tmp_ctx);
}