55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
#include "git-compat-util.h"
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#ifdef OPEN_RETURNS_EINTR
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#undef open
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int git_open_with_retry(const char *path, int flags, ...)
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{
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mode_t mode = 0;
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int ret;
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/*
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* Also O_TMPFILE would take a mode, but it isn't defined everywhere.
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* And anyway, we don't use it in our code base.
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*/
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if (flags & O_CREAT) {
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va_list ap;
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va_start(ap, flags);
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mode = va_arg(ap, int);
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va_end(ap);
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}
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do {
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ret = open(path, flags, mode);
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} while (ret < 0 && errno == EINTR);
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return ret;
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}
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#endif
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int git_open_cloexec(const char *name, int flags)
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{
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int fd;
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static int o_cloexec = O_CLOEXEC;
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fd = open(name, flags | o_cloexec);
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if ((o_cloexec & O_CLOEXEC) && fd < 0 && errno == EINVAL) {
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/* Try again w/o O_CLOEXEC: the kernel might not support it */
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o_cloexec &= ~O_CLOEXEC;
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fd = open(name, flags | o_cloexec);
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}
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#if defined(F_GETFD) && defined(F_SETFD) && defined(FD_CLOEXEC)
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{
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static int fd_cloexec = FD_CLOEXEC;
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if (!o_cloexec && 0 <= fd && fd_cloexec) {
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/* Opened w/o O_CLOEXEC? try with fcntl(2) to add it */
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int flags = fcntl(fd, F_GETFD);
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if (fcntl(fd, F_SETFD, flags | fd_cloexec))
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fd_cloexec = 0;
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}
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}
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#endif
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return fd;
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}
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