diff options
| author | Tobias Mueller <muelli@cryptobitch.de> | 2020-06-10 21:16:31 +0200 |
|---|---|---|
| committer | Ondrej Holy <oholy@redhat.com> | 2020-06-22 12:51:44 +0000 |
| commit | ab2ced6131a90c857306374c99e69769141dc11c (patch) | |
| tree | 71efe7e3194feee8fba83925a776cead2d280caf /metadata | |
| parent | 65241caeb41bf0a40efb06aa36eb0759e45f852a (diff) | |
| download | gvfs-ab2ced6131a90c857306374c99e69769141dc11c.tar.gz | |
metadata: check for mmap failure
mmap returns MAP_FAILED if, well, it failed. Thus, checking for
NULL does not catch errors.
Diffstat (limited to 'metadata')
| -rw-r--r-- | metadata/metabuilder.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/metadata/metabuilder.c b/metadata/metabuilder.c index f45d20ae..03063e68 100644 --- a/metadata/metabuilder.c +++ b/metadata/metabuilder.c @@ -1234,7 +1234,7 @@ meta_builder_write (MetaBuilder *builder, data = mmap (NULL, RANDOM_TAG_OFFSET + 4, PROT_READ|PROT_WRITE, MAP_SHARED, fd2, 0); - if (data) + if (data != MAP_FAILED) { old_tag = GUINT32_FROM_BE (*(guint32 *)(data + RANDOM_TAG_OFFSET)); *(guint32 *)(data + ROTATED_OFFSET) = 0xffffffff; |