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https://github.com/systemd/systemd
synced 2024-09-06 16:56:43 +00:00
Merge pull request #30649 from YHNdnzj/close-nointr-unnecessary
Some modernization/cleanup for fd-util
This commit is contained in:
commit
568fd8a63b
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@ -92,22 +92,22 @@ void safe_close_pair(int p[static 2]) {
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p[1] = safe_close(p[1]);
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p[1] = safe_close(p[1]);
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}
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}
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void close_many(const int fds[], size_t n_fd) {
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void close_many(const int fds[], size_t n_fds) {
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assert(fds || n_fd <= 0);
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assert(fds || n_fds == 0);
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for (size_t i = 0; i < n_fd; i++)
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FOREACH_ARRAY(fd, fds, n_fds)
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safe_close(fds[i]);
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safe_close(*fd);
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}
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}
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void close_many_unset(int fds[], size_t n_fd) {
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void close_many_unset(int fds[], size_t n_fds) {
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assert(fds || n_fd <= 0);
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assert(fds || n_fds == 0);
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for (size_t i = 0; i < n_fd; i++)
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FOREACH_ARRAY(fd, fds, n_fds)
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fds[i] = safe_close(fds[i]);
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*fd = safe_close(*fd);
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}
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}
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void close_many_and_free(int *fds, size_t n_fds) {
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void close_many_and_free(int *fds, size_t n_fds) {
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assert(fds || n_fds <= 0);
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assert(fds || n_fds == 0);
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close_many(fds, n_fds);
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close_many(fds, n_fds);
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free(fds);
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free(fds);
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@ -189,15 +189,15 @@ int fd_cloexec(int fd, bool cloexec) {
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int fd_cloexec_many(const int fds[], size_t n_fds, bool cloexec) {
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int fd_cloexec_many(const int fds[], size_t n_fds, bool cloexec) {
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int ret = 0, r;
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int ret = 0, r;
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assert(n_fds == 0 || fds);
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assert(fds || n_fds == 0);
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for (size_t i = 0; i < n_fds; i++) {
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FOREACH_ARRAY(fd, fds, n_fds) {
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if (fds[i] < 0) /* Skip gracefully over already invalidated fds */
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if (*fd < 0) /* Skip gracefully over already invalidated fds */
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continue;
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continue;
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r = fd_cloexec(fds[i], cloexec);
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r = fd_cloexec(*fd, cloexec);
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if (r < 0 && ret >= 0) /* Continue going, but return first error */
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if (r < 0) /* Continue going, but return first error */
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ret = r;
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RET_GATHER(ret, r);
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else
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else
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ret = 1; /* report if we did anything */
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ret = 1; /* report if we did anything */
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}
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}
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@ -205,14 +205,15 @@ int fd_cloexec_many(const int fds[], size_t n_fds, bool cloexec) {
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return ret;
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return ret;
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}
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}
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static bool fd_in_set(int fd, const int fdset[], size_t n_fdset) {
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static bool fd_in_set(int fd, const int fds[], size_t n_fds) {
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assert(n_fdset == 0 || fdset);
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assert(fd >= 0);
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assert(fds || n_fds == 0);
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for (size_t i = 0; i < n_fdset; i++) {
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FOREACH_ARRAY(i, fds, n_fds) {
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if (fdset[i] < 0)
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if (*i < 0)
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continue;
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continue;
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if (fdset[i] == fd)
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if (*i == fd)
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return true;
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return true;
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}
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}
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@ -243,7 +244,7 @@ int get_max_fd(void) {
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static int close_all_fds_frugal(const int except[], size_t n_except) {
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static int close_all_fds_frugal(const int except[], size_t n_except) {
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int max_fd, r = 0;
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int max_fd, r = 0;
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assert(n_except == 0 || except);
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assert(except || n_except == 0);
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/* This is the inner fallback core of close_all_fds(). This never calls malloc() or opendir() or so
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/* This is the inner fallback core of close_all_fds(). This never calls malloc() or opendir() or so
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* and hence is safe to be called in signal handler context. Most users should call close_all_fds(),
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* and hence is safe to be called in signal handler context. Most users should call close_all_fds(),
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@ -258,8 +259,7 @@ static int close_all_fds_frugal(const int except[], size_t n_except) {
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* spin the CPU for a long time. */
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* spin the CPU for a long time. */
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if (max_fd > MAX_FD_LOOP_LIMIT)
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if (max_fd > MAX_FD_LOOP_LIMIT)
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return log_debug_errno(SYNTHETIC_ERRNO(EPERM),
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return log_debug_errno(SYNTHETIC_ERRNO(EPERM),
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"Refusing to loop over %d potential fds.",
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"Refusing to loop over %d potential fds.", max_fd);
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max_fd);
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for (int fd = 3; fd >= 0; fd = fd < max_fd ? fd + 1 : -EBADF) {
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for (int fd = 3; fd >= 0; fd = fd < max_fd ? fd + 1 : -EBADF) {
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int q;
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int q;
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@ -268,8 +268,8 @@ static int close_all_fds_frugal(const int except[], size_t n_except) {
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continue;
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continue;
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q = close_nointr(fd);
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q = close_nointr(fd);
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if (q < 0 && q != -EBADF && r >= 0)
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if (q != -EBADF)
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r = q;
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RET_GATHER(r, q);
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}
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}
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return r;
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return r;
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@ -598,7 +598,7 @@ int move_fd(int from, int to, int cloexec) {
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if (fl < 0)
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if (fl < 0)
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return -errno;
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return -errno;
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cloexec = !!(fl & FD_CLOEXEC);
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cloexec = FLAGS_SET(fl, FD_CLOEXEC);
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}
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}
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r = dup3(from, to, cloexec ? O_CLOEXEC : 0);
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r = dup3(from, to, cloexec ? O_CLOEXEC : 0);
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@ -32,8 +32,8 @@ static inline int safe_close_above_stdio(int fd) {
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return safe_close(fd);
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return safe_close(fd);
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}
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}
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void close_many(const int fds[], size_t n_fd);
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void close_many(const int fds[], size_t n_fds);
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void close_many_unset(int fds[], size_t n_fd);
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void close_many_unset(int fds[], size_t n_fds);
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void close_many_and_free(int *fds, size_t n_fds);
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void close_many_and_free(int *fds, size_t n_fds);
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int fclose_nointr(FILE *f);
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int fclose_nointr(FILE *f);
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@ -1275,7 +1275,7 @@ _public_ int sd_login_monitor_new(const char *category, sd_login_monitor **m) {
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_public_ sd_login_monitor* sd_login_monitor_unref(sd_login_monitor *m) {
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_public_ sd_login_monitor* sd_login_monitor_unref(sd_login_monitor *m) {
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if (m)
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if (m)
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(void) close_nointr(MONITOR_TO_FD(m));
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(void) close(MONITOR_TO_FD(m));
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return NULL;
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return NULL;
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}
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}
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@ -394,7 +394,7 @@ int sd_network_monitor_new(sd_network_monitor **m, const char *category) {
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sd_network_monitor* sd_network_monitor_unref(sd_network_monitor *m) {
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sd_network_monitor* sd_network_monitor_unref(sd_network_monitor *m) {
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if (m)
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if (m)
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(void) close_nointr(MONITOR_TO_FD(m));
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(void) close(MONITOR_TO_FD(m));
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return NULL;
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return NULL;
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}
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}
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@ -114,7 +114,8 @@ static int sd_drmdropmaster(int fd) {
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}
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}
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static int session_device_open(SessionDevice *sd, bool active) {
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static int session_device_open(SessionDevice *sd, bool active) {
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int fd, r;
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_cleanup_close_ int fd = -EBADF;
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int r;
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assert(sd);
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assert(sd);
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assert(sd->type != DEVICE_TYPE_UNKNOWN);
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assert(sd->type != DEVICE_TYPE_UNKNOWN);
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@ -132,10 +133,8 @@ static int session_device_open(SessionDevice *sd, bool active) {
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/* Weird legacy DRM semantics might return an error even though we're master. No way to detect
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/* Weird legacy DRM semantics might return an error even though we're master. No way to detect
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* that so fail at all times and let caller retry in inactive state. */
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* that so fail at all times and let caller retry in inactive state. */
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r = sd_drmsetmaster(fd);
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r = sd_drmsetmaster(fd);
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if (r < 0) {
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if (r < 0)
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(void) close_nointr(fd);
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return r;
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return r;
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}
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} else
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} else
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/* DRM-Master is granted to the first user who opens a device automatically (ughh,
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/* DRM-Master is granted to the first user who opens a device automatically (ughh,
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* racy!). Hence, we just drop DRM-Master in case we were the first. */
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* racy!). Hence, we just drop DRM-Master in case we were the first. */
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@ -153,7 +152,7 @@ static int session_device_open(SessionDevice *sd, bool active) {
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break;
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break;
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}
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}
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return fd;
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return TAKE_FD(fd);
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}
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}
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static int session_device_start(SessionDevice *sd) {
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static int session_device_start(SessionDevice *sd) {
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@ -94,7 +94,7 @@ int asynchronous_close(int fd) {
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pid = clone_with_nested_stack(close_func, CLONE_FILES | ((v & NEED_DOUBLE_FORK) ? 0 : SIGCHLD), UINT_TO_PTR(v));
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pid = clone_with_nested_stack(close_func, CLONE_FILES | ((v & NEED_DOUBLE_FORK) ? 0 : SIGCHLD), UINT_TO_PTR(v));
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if (pid < 0)
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if (pid < 0)
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assert_se(close_nointr(fd) != -EBADF); /* local fallback */
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safe_close(fd); /* local fallback */
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else if (v & NEED_DOUBLE_FORK) {
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else if (v & NEED_DOUBLE_FORK) {
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/* Reap the intermediate child. Key here is that we specify __WCLONE, since we didn't ask for
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/* Reap the intermediate child. Key here is that we specify __WCLONE, since we didn't ask for
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@ -3,6 +3,7 @@
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#include <errno.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <fcntl.h>
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#include <stddef.h>
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#include <stddef.h>
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#include <unistd.h>
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#include "sd-daemon.h"
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#include "sd-daemon.h"
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@ -40,8 +41,8 @@ int fdset_new_array(FDSet **ret, const int fds[], size_t n_fds) {
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if (!s)
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if (!s)
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return -ENOMEM;
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return -ENOMEM;
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for (size_t i = 0; i < n_fds; i++) {
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FOREACH_ARRAY(fd, fds, n_fds) {
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r = fdset_put(s, fds[i]);
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r = fdset_put(s, *fd);
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if (r < 0)
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if (r < 0)
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return r;
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return r;
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}
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}
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@ -71,7 +72,7 @@ void fdset_close(FDSet *s) {
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log_debug("Closing set fd %i (%s)", fd, strna(path));
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log_debug("Closing set fd %i (%s)", fd, strna(path));
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}
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}
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(void) close_nointr(fd);
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(void) close(fd);
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}
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}
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}
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}
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