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Refactor file descriptor closure into a new closefrom_close()

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This commit is contained in:
Guillem Jover 2014-11-05 20:01:53 +01:00
parent 3881c4fc68
commit 34df142665
1 changed files with 15 additions and 17 deletions
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32
src/closefrom.c
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@ -60,6 +60,17 @@
# define closefrom closefrom_fallback
#endif
static inline void
closefrom_close(int fd)
{
#ifdef __APPLE__
/* Avoid potential libdispatch crash when we close its fds. */
(void)fcntl(fd, F_SETFD, FD_CLOEXEC);
#else
(void)close(fd);
#endif
}
/*
* Close all file descriptors greater than or equal to lowfd.
* This is the expensive (fallback) method.
@ -82,14 +93,8 @@ closefrom_fallback(int lowfd)
if (maxfd < 0)
maxfd = OPEN_MAX;
for (fd = lowfd; fd < maxfd; fd++) {
#ifdef __APPLE__
/* Avoid potential libdispatch crash when we close its fds. */
(void)fcntl((int)fd, F_SETFD, FD_CLOEXEC);
#else
(void)close((int)fd);
#endif
}
for (fd = lowfd; fd < maxfd; fd++)
closefrom_close(fd);
}
/*
@ -138,15 +143,8 @@ closefrom(int lowfd)
int fd;
fd = strtonum(dent->d_name, lowfd, INT_MAX, &errstr);
if (errstr == NULL && fd != dirfd(dirp)) {
# ifdef __APPLE__
/* Avoid potential libdispatch crash when we
* close its fds. */
(void)fcntl(fd, F_SETFD, FD_CLOEXEC);
# else
(void)close(fd);
# endif
}
if (errstr == NULL && fd != dirfd(dirp))
closefrom_close(fd);
}
(void)closedir(dirp);
} else