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common/fork_function: close all fds in children

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Not strictly necessary, but a tidier.

Signed-off-by: Sage Weil <sage@redhat.com>
This commit is contained in:
Sage Weil 2017-07-07 08:35:56 -04:00
parent f46d76edde
commit 55f76d5ad8
1 changed files with 15 additions and 0 deletions

15
src/common/fork_function.h
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@ -46,6 +46,21 @@ static inline int fork_function(
}
// we are forker (first child)
// close all fds
int maxfd = sysconf(_SC_OPEN_MAX);
if (maxfd == -1)
maxfd = 16384;
for (int fd = 0; fd <= maxfd; fd++) {
if (fd == STDIN_FILENO)
continue;
if (fd == STDOUT_FILENO)
continue;
if (fd == STDERR_FILENO)
continue;
::close(fd);
}
sigset_t mask, oldmask;
int pid;