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lib/util: fix fd leak in anonymous_shared_allocate() if MAP_ANON is not available

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metze
This commit is contained in:
Stefan Metzmacher 2012-06-26 13:48:36 +02:00 committed by Michael Adam
parent 1a622fe641
commit 3c3ed70690
1 changed files with 14 additions and 1 deletions
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15
lib/util/util.c
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@ -1109,8 +1109,21 @@ void *anonymous_shared_allocate(size_t orig_bufsz)
buf = mmap(NULL, bufsz, PROT_READ|PROT_WRITE, MAP_ANON|MAP_SHARED,
-1 /* fd */, 0 /* offset */);
#else
{
int saved_errno;
int fd;
fd = open("/dev/zero", O_RDWR);
if (fd == -1) {
return NULL;
}
buf = mmap(NULL, bufsz, PROT_READ|PROT_WRITE, MAP_FILE|MAP_SHARED,
open("/dev/zero", O_RDWR), 0 /* offset */);
fd, 0 /* offset */);
saved_errno = errno;
close(fd);
errno = saved_errno;
}
#endif
if (buf == MAP_FAILED) {