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Validates fd before calling fcntl

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This commit is contained in:
Y. T. Chung
2017-07-21 21:40:29 +08:00
committed by David Goldblatt
parent e215a7bc18
commit aa6c282137
2 changed files with 12 additions and 4 deletions
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4
src/prof.c
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@@ -1414,7 +1414,9 @@ prof_open_maps(const char *format, ...) {
mfd = open(filename, O_RDONLY | O_CLOEXEC);
#else
mfd = open(filename, O_RDONLY);
fcntl(mfd, F_SETFD, fcntl(mfd, F_GETFD) | FD_CLOEXEC);
if (mfd != -1) {
fcntl(mfd, F_SETFD, fcntl(mfd, F_GETFD) | FD_CLOEXEC);
}
#endif
return mfd;