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-rw-r--r--cg-remove.c564
1 files changed, 280 insertions, 284 deletions
diff --git a/cg-remove.c b/cg-remove.c
index 0e81df0..20ca51e 100644
--- a/cg-remove.c
+++ b/cg-remove.c
@@ -23,12 +23,13 @@ static libcoopgamma_context_t cg;
/**
* Print usage information and exit
*/
-static void usage(void)
+static void
+usage(void)
{
- fprintf(stderr,
- "Usage: %s [-M method] [-S site] [-c crtc]... class...\n",
- argv0);
- exit(1);
+ fprintf(stderr,
+ "usage: %s [-M method] [-S site] [-c crtc]... class...\n",
+ argv0);
+ exit(1);
}
@@ -38,22 +39,23 @@ static void usage(void)
*
* @return Zero on success, -1 on error
*/
-static int initialise_proc(void)
+static int
+initialise_proc(void)
{
- sigset_t sigmask;
- int sig;
-
- for (sig = 1; sig < _NSIG; sig++)
- if (signal(sig, SIG_DFL) == SIG_ERR)
- if (sig == SIGCHLD)
- return -1;
-
- if (sigemptyset(&sigmask) < 0)
- return -1;
- if (sigprocmask(SIG_SETMASK, &sigmask, NULL) < 0)
- return -1;
-
- return 0;
+ sigset_t sigmask;
+ int sig;
+
+ for (sig = 1; sig < _NSIG; sig++)
+ if (signal(sig, SIG_DFL) == SIG_ERR)
+ if (sig == SIGCHLD)
+ return -1;
+
+ if (sigemptyset(&sigmask) < 0)
+ return -1;
+ if (sigprocmask(SIG_SETMASK, &sigmask, NULL) < 0)
+ return -1;
+
+ return 0;
}
@@ -63,21 +65,22 @@ static int initialise_proc(void)
*
* @return Zero on success, -1 on error
*/
-static int list_methods(void)
+static int
+list_methods(void)
{
- char** list;
- size_t i;
-
- list = libcoopgamma_get_methods();
- if (list == NULL)
- return -1;
- for (i = 0; list[i]; i++)
- printf("%s\n", list[i]);
- free(list);
- if (fflush(stdout) < 0)
- return -1;
-
- return 0;
+ char **list;
+ size_t i;
+
+ list = libcoopgamma_get_methods();
+ if (!list)
+ return -1;
+ for (i = 0; list[i]; i++)
+ printf("%s\n", list[i]);
+ free(list);
+ if (fflush(stdout) < 0)
+ return -1;
+
+ return 0;
}
@@ -90,21 +93,22 @@ static int list_methods(void)
* @return Zero on success, -1 on error, -2
* on libcoopgamma error
*/
-static int list_crtcs(void)
+static int
+list_crtcs(void)
{
- char** list;
- size_t i;
-
- list = libcoopgamma_get_crtcs_sync(&cg);
- if (list == NULL)
- return -2;
- for (i = 0; list[i]; i++)
- printf("%s\n", list[i]);
- free(list);
- if (fflush(stdout) < 0)
- return -1;
-
- return 0;
+ char **list;
+ size_t i;
+
+ list = libcoopgamma_get_crtcs_sync(&cg);
+ if (!list)
+ return -2;
+ for (i = 0; list[i]; i++)
+ printf("%s\n", list[i]);
+ free(list);
+ if (fflush(stdout) < 0)
+ return -1;
+
+ return 0;
}
@@ -116,123 +120,119 @@ static int list_crtcs(void)
* @return Zero on success, -1 on error, -2 on
* libcoopgamma error
*/
-static int remove_filters(char* const* restrict crtcs, char* const* restrict classes)
+static int
+remove_filters(char *const *restrict crtcs, char *const *restrict classes)
{
- size_t n = 0, unsynced = 0, selected, i, j;
- char* synced = NULL;
- libcoopgamma_async_context_t* asyncs = NULL;
- int saved_errno, need_flush = 0, ret = 0;
- struct pollfd pollfd;
- libcoopgamma_filter_t command;
-
- for (i = 0; crtcs[i] != NULL; i++);
- for (j = 0; classes[j] != NULL; j++);
- synced = calloc(i, j * sizeof(*synced));
- if (synced == NULL)
- goto fail;
- asyncs = calloc(i, j * sizeof(*asyncs));
- if (asyncs == NULL)
- goto fail;
-
- i = j = 0;
- command.lifespan = LIBCOOPGAMMA_REMOVE;
- pollfd.fd = cg.fd;
- pollfd.events = POLLIN | POLLRDNORM | POLLRDBAND | POLLPRI;
-
- while ((unsynced > 0) || (crtcs[i] != NULL))
- {
- wait:
- if (crtcs[i] != NULL)
- pollfd.events |= POLLOUT;
- else
- pollfd.events &= ~POLLOUT;
-
- pollfd.revents = 0;
- if (poll(&pollfd, (nfds_t)1, -1) < 0)
- goto fail;
-
- if (pollfd.revents & (POLLOUT | POLLERR | POLLHUP | POLLNVAL))
- {
- if (need_flush && (libcoopgamma_flush(&cg) < 0))
- goto send_fail;
- need_flush = 0;
- for (; crtcs[i] != NULL; i++, j = 0)
- {
- command.crtc = crtcs[i];
- while (classes[j] != NULL)
- {
- command.class = classes[j++];
- if (unsynced++, libcoopgamma_set_gamma_send(&command, &cg, asyncs + n++) < 0)
- goto send_fail;
- }
- }
- goto send_done;
- send_fail:
- switch (errno)
- {
- case EINTR:
- case EAGAIN:
+ size_t n = 0, unsynced = 0, selected, i, j;
+ char *synced = NULL;
+ libcoopgamma_async_context_t *asyncs = NULL;
+ int saved_errno, need_flush = 0, ret = 0;
+ struct pollfd pollfd;
+ libcoopgamma_filter_t command;
+
+ for (i = 0; crtcs[i]; i++);
+ for (j = 0; classes[j]; j++);
+ synced = calloc(i, j * sizeof(*synced));
+ if (!synced)
+ goto fail;
+ asyncs = calloc(i, j * sizeof(*asyncs));
+ if (!asyncs)
+ goto fail;
+
+ i = j = 0;
+ command.lifespan = LIBCOOPGAMMA_REMOVE;
+ pollfd.fd = cg.fd;
+ pollfd.events = POLLIN | POLLRDNORM | POLLRDBAND | POLLPRI;
+
+ while (unsynced > 0 || crtcs[i]) {
+ wait:
+ if (crtcs[i])
+ pollfd.events |= POLLOUT;
+ else
+ pollfd.events &= ~POLLOUT;
+
+ pollfd.revents = 0;
+ if (poll(&pollfd, (nfds_t)1, -1) < 0)
+ goto fail;
+
+ if (pollfd.revents & (POLLOUT | POLLERR | POLLHUP | POLLNVAL)) {
+ if (need_flush && (libcoopgamma_flush(&cg) < 0))
+ goto send_fail;
+ need_flush = 0;
+ for (; crtcs[i]; i++, j = 0) {
+ command.crtc = crtcs[i];
+ while (classes[j]) {
+ command.class = classes[j++];
+ unsynced++;
+ if (libcoopgamma_set_gamma_send(&command, &cg, asyncs + n++) < 0)
+ goto send_fail;
+ }
+ }
+ goto send_done;
+ send_fail:
+ switch (errno) {
+ case EINTR:
+ case EAGAIN:
#if EAGAIN != EWOULDBLOCK
- case EWOULDBLOCK:
+ case EWOULDBLOCK:
#endif
- need_flush = 1;
- if (classes[j] == NULL)
- i++, j = 0;
- break;
- default:
- goto fail;
- }
- }
- send_done:
-
- if ((unsynced == 0) && (crtcs[i] == NULL))
- break;
-
- if (pollfd.revents & (POLLIN | POLLRDNORM | POLLRDBAND | POLLPRI))
- while (unsynced > 0)
- switch (libcoopgamma_synchronise(&cg, asyncs, n, &selected))
- {
- case 0:
- if (synced[selected])
- {
- libcoopgamma_skip_message(&cg);
- break;
+ need_flush = 1;
+ if (!classes[j])
+ i++, j = 0;
+ break;
+ default:
+ goto fail;
+ }
}
- synced[selected] = 1;
- unsynced -= 1;
- if (libcoopgamma_set_gamma_recv(&cg, asyncs + selected) < 0)
- goto cg_fail;
- break;
- default:
- switch (errno)
- {
- case 0:
- break;
- case EINTR:
- case EAGAIN:
+ send_done:
+
+ if (!unsynced && !crtcs[i])
+ break;
+
+ if (pollfd.revents & (POLLIN | POLLRDNORM | POLLRDBAND | POLLPRI)) {
+ while (unsynced > 0) {
+ switch (libcoopgamma_synchronise(&cg, asyncs, n, &selected)) {
+ case 0:
+ if (synced[selected]) {
+ libcoopgamma_skip_message(&cg);
+ break;
+ }
+ synced[selected] = 1;
+ unsynced -= 1;
+ if (libcoopgamma_set_gamma_recv(&cg, asyncs + selected) < 0)
+ goto cg_fail;
+ break;
+ default:
+ switch (errno) {
+ case 0:
+ break;
+ case EINTR:
+ case EAGAIN:
#if EAGAIN != EWOULDBLOCK
- case EWOULDBLOCK:
+ case EWOULDBLOCK:
#endif
- goto wait;
- default:
- goto fail;
+ goto wait;
+ default:
+ goto fail;
+ }
+ break;
+ }
+ }
}
- break;
- }
- }
-
- done:
- saved_errno = errno;
- free(synced);
- free(asyncs);
- errno = saved_errno;
- return ret;
- fail:
- ret = -1;
- goto done;
- cg_fail:
- ret = -2;
- goto done;
+ }
+
+done:
+ saved_errno = errno;
+ free(synced);
+ free(asyncs);
+ errno = saved_errno;
+ return ret;
+fail:
+ ret = -1;
+ goto done;
+cg_fail:
+ ret = -2;
+ goto done;
}
@@ -255,132 +255,128 @@ static int remove_filters(char* const* restrict crtcs, char* const* restrict cla
* @param argv The command line arguments
* @return 0 on success, 1 on error
*/
-int main(int argc, char* argv[])
+int
+main(int argc, char *argv[])
{
- int stage = 0;
- int rc = 0;
- char* method = NULL;
- char* site = NULL;
- char** crtcs_ = NULL;
- char** crtcs = alloca(argc * sizeof(char*));
- size_t i, crtcs_n = 0;
-
- ARGBEGIN
- {
- case 'M':
- if (method != NULL)
- usage();
- method = EARGF(usage());
- break;
- case 'S':
- if (site != NULL)
- usage();
- site = EARGF(usage());
- break;
- case 'c':
- crtcs[crtcs_n++] = EARGF(usage());
- break;
- default:
- usage();
- }
- ARGEND;
-
- if (initialise_proc() < 0)
- goto fail;
-
- if ((method != NULL) && !strcmp(method, "?"))
- {
- if ((site != NULL) || (crtcs_n > 0) || (argc > 0))
- usage();
- if (list_methods() < 0)
- goto fail;
- return 0;
- }
-
- if (libcoopgamma_context_initialise(&cg) < 0)
- goto fail;
- stage++;
- if (libcoopgamma_connect(method, site, &cg) < 0)
- {
- fprintf(stderr, "%s: server failed to initialise\n", argv0);
- goto custom_fail;
- }
- stage++;
-
- for (i = 0; i < crtcs_n; i++)
- if (!strcmp(crtcs[i], "?"))
- {
- if (argc > 0)
- usage();
- switch (list_crtcs())
- {
- case 0:
- goto done;
- case -1:
- goto fail;
- default:
- goto cg_fail;
- }
- }
-
- if (argc == 0)
- usage();
-
- if (crtcs_n == 0)
- {
- crtcs = crtcs_ = libcoopgamma_get_crtcs_sync(&cg);
- if (crtcs == NULL)
- goto cg_fail;
- }
- else
- crtcs[crtcs_n] = NULL;
-
- if (libcoopgamma_set_nonblocking(&cg, 1) < 0)
- goto fail;
-
- switch (remove_filters(crtcs, argv))
- {
- case 0:
- break;
- case -1:
- goto fail;
- default:
- goto cg_fail;
- }
-
- done:
- if (stage >= 1)
- libcoopgamma_context_destroy(&cg, stage >= 2);
- free(crtcs_);
- return rc;
-
- custom_fail:
- rc = 1;
- goto done;
-
- fail:
- rc = 1;
- perror(argv0);
- goto done;
+ int stage = 0;
+ int rc = 0;
+ char *method = NULL;
+ char *site = NULL;
+ char **crtcs_ = NULL;
+ char **crtcs;
+ size_t i, crtcs_n = 0;
+ const char *side;
+
+ crtcs = alloca((size_t)argc * sizeof(char *));
+
+ ARGBEGIN {
+ case 'M':
+ if (method)
+ usage();
+ method = EARGF(usage());
+ break;
+ case 'S':
+ if (site)
+ usage();
+ site = EARGF(usage());
+ break;
+ case 'c':
+ crtcs[crtcs_n++] = EARGF(usage());
+ break;
+ default:
+ usage();
+ }
+ ARGEND;
+
+ if (initialise_proc() < 0)
+ goto fail;
+
+ if (method && !strcmp(method, "?")) {
+ if (site || crtcs_n > 0 || argc > 0)
+ usage();
+ if (list_methods() < 0)
+ goto fail;
+ return 0;
+ }
+
+ if (libcoopgamma_context_initialise(&cg) < 0)
+ goto fail;
+ stage++;
+ if (libcoopgamma_connect(method, site, &cg) < 0) {
+ fprintf(stderr, "%s: server failed to initialise\n", argv0);
+ goto custom_fail;
+ }
+ stage++;
+
+ for (i = 0; i < crtcs_n; i++) {
+ if (!strcmp(crtcs[i], "?")) {
+ if (argc > 0)
+ usage();
+ switch (list_crtcs())
+ {
+ case 0:
+ goto done;
+ case -1:
+ goto fail;
+ default:
+ goto cg_fail;
+ }
+ }
+ }
+
+ if (!argc)
+ usage();
- cg_fail:
- rc = 1;
- {
- const char* side = cg.error.server_side ? "server" : "client";
- if (cg.error.custom)
- {
- if ((cg.error.number != 0) || (cg.error.description != NULL))
- fprintf(stderr, "%s: %s-side error number %" PRIu64 ": %s\n",
- argv0, side, cg.error.number, cg.error.description);
- else if (cg.error.number != 0)
- fprintf(stderr, "%s: %s-side error number %" PRIu64 "\n", argv0, side, cg.error.number);
- else if (cg.error.description != NULL)
- fprintf(stderr, "%s: %s-side error: %s\n", argv0, side, cg.error.description);
- }
- else if (cg.error.description != NULL)
- fprintf(stderr, "%s: %s-side error: %s\n", argv0, side, cg.error.description);
- else
- fprintf(stderr, "%s: %s-side error: %s\n", argv0, side, strerror(cg.error.number));
- }
- goto done;
+ if (!crtcs_n) {
+ crtcs = crtcs_ = libcoopgamma_get_crtcs_sync(&cg);
+ if (!crtcs)
+ goto cg_fail;
+ } else {
+ crtcs[crtcs_n] = NULL;
+ }
+
+ if (libcoopgamma_set_nonblocking(&cg, 1) < 0)
+ goto fail;
+
+ switch (remove_filters(crtcs, argv)) {
+ case 0:
+ break;
+ case -1:
+ goto fail;
+ default:
+ goto cg_fail;
+ }
+
+done:
+ if (stage >= 1)
+ libcoopgamma_context_destroy(&cg, stage >= 2);
+ free(crtcs_);
+ return rc;
+
+custom_fail:
+ rc = 1;
+ goto done;
+
+fail:
+ rc = 1;
+ perror(argv0);
+ goto done;
+
+cg_fail:
+ rc = 1;
+ side = cg.error.server_side ? "server" : "client";
+ if (cg.error.custom) {
+ if (cg.error.number || cg.error.description)
+ fprintf(stderr, "%s: %s-side error number %" PRIu64 ": %s\n",
+ argv0, side, cg.error.number, cg.error.description);
+ else if (cg.error.number)
+ fprintf(stderr, "%s: %s-side error number %" PRIu64 "\n", argv0, side, cg.error.number);
+ else if (cg.error.description)
+ fprintf(stderr, "%s: %s-side error: %s\n", argv0, side, cg.error.description);
+ } else if (cg.error.description) {
+ fprintf(stderr, "%s: %s-side error: %s\n", argv0, side, cg.error.description);
+ } else {
+ fprintf(stderr, "%s: %s-side error: %s\n", argv0, side, strerror((int)cg.error.number));
+ }
+ goto done;
}
generated by cgit v1.2.3-70-g09d2 (git 2.47.0) at 2024-11-25 11:24:06 +0000