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core-util: introduce FD_CLOEXEC wrappers for open/socket/pipe/accept

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This commit is contained in:
Lennart Poettering 2009-10-30 03:30:42 +01:00
parent 754644fa6e
commit 9c1a98953f
3 changed files with 86 additions and 1 deletions
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79
src/pulsecore/core-util.c
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@ -2889,3 +2889,82 @@ const char *pa_get_temp_dir(void) {
return "/tmp";
}
int pa_open_cloexec(const char *fn, int flags, mode_t mode) {
int fd;
#ifdef O_NOCTTY
flags |= O_NOCTTY;
#endif
#ifdef O_CLOEXEC
if ((fd = open(fn, flags|O_CLOEXEC, mode)) >= 0)
return fd;
if (errno != EINVAL)
return fd;
#endif
if ((fd = open(fn, flags, mode)) < 0)
return fd;
pa_make_fd_cloexec(fd);
return fd;
}
int pa_socket_cloexec(int domain, int type, int protocol) {
int fd;
#ifdef SOCK_CLOEXEC
if ((fd = socket(domain, type | SOCK_CLOEXEC, protocol)) >= 0)
return fd;
if (errno != EINVAL)
return fd;
#endif
if ((fd = socket(domain, type, protocol)) < 0)
return fd;
pa_make_fd_cloexec(fd);
return fd;
}
int pa_pipe_cloexec(int pipefd[2]) {
int r;
#ifdef HAVE_PIPE2
if ((r = pipe2(pipefd, O_CLOEXEC)) >= 0)
return r;
if (errno != EINVAL && errno != ENOSYS)
return r;
#endif
if ((r = pipe(pipefd)) < 0)
return r;
pa_make_fd_cloexec(pipefd[0]);
pa_make_fd_cloexec(pipefd[1]);
return 0;
}
int pa_accept_cloexec(int sockfd, struct sockaddr *addr, socklen_t *addrlen) {
int fd;
#ifdef HAVE_ACCEPT4
if ((fd = accept4(sockfd, addr, addrlen, SOCK_CLOEXEC)) >= 0)
return fd;
if (errno != EINVAL && errno != ENOSYS)
return fd;
#endif
if ((fd = accept(sockfd, addr, addrlen)) < 0)
return fd;
pa_make_fd_cloexec(fd);
return 0;
}