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| author | ghelmer <ghelmer@FreeBSD.org> | 2013-06-11 18:43:27 +0000 |
|---|---|---|
| committer | ghelmer <ghelmer@FreeBSD.org> | 2013-06-11 18:43:27 +0000 |
| commit | acb2956b5be212b08e52b54998f877ce63d5422a (patch) | |
| tree | a31ea3f580d38d845254e954ffc37045ba60d4cb /libexec | |
| parent | e6f73328423acdce70b5f1692dd903c3076b6224 (diff) | |
| download | FreeBSD-src-acb2956b5be212b08e52b54998f877ce63d5422a.zip FreeBSD-src-acb2956b5be212b08e52b54998f877ce63d5422a.tar.gz | |
Prevent races running the queue by serializing access to the
queue directory.
PR: bin/113239
Diffstat (limited to 'libexec')
| -rw-r--r-- | libexec/atrun/atrun.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libexec/atrun/atrun.c b/libexec/atrun/atrun.c index 8b0315e..745d11e 100644 --- a/libexec/atrun/atrun.c +++ b/libexec/atrun/atrun.c @@ -31,6 +31,7 @@ static const char rcsid[] = /* System Headers */ #include <sys/fcntl.h> +#include <sys/file.h> #include <sys/types.h> #include <sys/stat.h> #ifdef __FreeBSD__ @@ -521,6 +522,9 @@ main(int argc, char *argv[]) if ((spool = opendir(".")) == NULL) perr("cannot read %s", ATJOB_DIR); + if (flock(dirfd(spool), LOCK_EX) == -1) + perr("cannot lock %s", ATJOB_DIR); + now = time(NULL); run_batch = 0; batch_uid = (uid_t) -1; |
