4 This file is part of polypaudio.
6 polypaudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published
8 by the Free Software Foundation; either version 2 of the License,
9 or (at your option) any later version.
11 polypaudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with polypaudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
35 #include <sys/types.h>
41 #include <sys/resource.h>
48 void pa_make_nonblock_fd(int fd) {
51 if ((v = fcntl(fd, F_GETFL)) >= 0)
52 if (!(v & O_NONBLOCK))
53 fcntl(fd, F_SETFL, v|O_NONBLOCK);
56 int pa_make_secure_dir(const char* dir) {
59 if (mkdir(dir, 0700) < 0)
63 if (lstat(dir, &st) < 0)
66 if (!S_ISDIR(st.st_mode) || (st.st_uid != getuid()) || ((st.st_mode & 0777) != 0700))
76 ssize_t pa_loop_read(int fd, void*data, size_t size) {
78 assert(fd >= 0 && data && size);
83 if ((r = read(fd, data, size)) < 0)
90 data = (uint8_t*) data + r;
97 ssize_t pa_loop_write(int fd, const void*data, size_t size) {
99 assert(fd >= 0 && data && size);
104 if ((r = write(fd, data, size)) < 0)
111 data = (uint8_t*) data + r;
118 void pa_check_signal_is_blocked(int sig) {
123 if (pthread_sigmask(SIG_SETMASK, NULL, &set) < 0) {
125 if (sigprocmask(SIG_SETMASK, NULL, &set) < 0) {
126 pa_log(__FILE__": sigprocmask() failed: %s\n", strerror(errno));
133 if (sigismember(&set, sig))
136 if (sigaction(sig, NULL, &sa) < 0) {
137 pa_log(__FILE__": sigaction() failed: %s\n", strerror(errno));
141 if (sa.sa_handler != SIG_DFL)
144 pa_log(__FILE__": WARNING: %s is not trapped. This might cause malfunction!\n", pa_strsignal(sig));
147 /* The following is based on an example from the GNU libc documentation */
148 char *pa_sprintf_malloc(const char *format, ...) {
158 c = pa_xrealloc(c, size);
160 va_start(ap, format);
161 r = vsnprintf(c, size, format, ap);
164 if (r > -1 && r < size)
167 if (r > -1) /* glibc 2.1 */
174 char *pa_vsprintf_malloc(const char *format, va_list ap) {
184 c = pa_xrealloc(c, size);
185 r = vsnprintf(c, size, format, ap);
187 if (r > -1 && r < size)
190 if (r > -1) /* glibc 2.1 */
198 char *pa_get_user_name(char *s, size_t l) {
199 struct passwd pw, *r;
203 if (!(p = getenv("USER")))
204 if (!(p = getenv("LOGNAME")))
205 if (!(p = getenv("USERNAME"))) {
207 if (getpwuid_r(getuid(), &pw, buf, sizeof(buf), &r) != 0 || !r) {
208 snprintf(s, l, "%lu", (unsigned long) getuid());
215 snprintf(s, l, "%s", p);
219 char *pa_get_host_name(char *s, size_t l) {
225 pa_usec_t pa_timeval_diff(const struct timeval *a, const struct timeval *b) {
229 if (pa_timeval_cmp(a, b) < 0) {
230 const struct timeval *c;
236 r = ((pa_usec_t) a->tv_sec - b->tv_sec)* 1000000;
238 if (a->tv_usec > b->tv_usec)
239 r += ((pa_usec_t) a->tv_usec - b->tv_usec);
240 else if (a->tv_usec < b->tv_usec)
241 r -= ((pa_usec_t) b->tv_usec - a->tv_usec);
246 int pa_timeval_cmp(const struct timeval *a, const struct timeval *b) {
249 if (a->tv_sec < b->tv_sec)
252 if (a->tv_sec > b->tv_sec)
255 if (a->tv_usec < b->tv_usec)
258 if (a->tv_usec > b->tv_usec)
264 pa_usec_t pa_age(const struct timeval *tv) {
267 gettimeofday(&now, NULL);
268 return pa_timeval_diff(&now, tv);
271 void pa_timeval_add(struct timeval *tv, pa_usec_t v) {
276 tv->tv_sec += (unsigned long) secs;
281 while (tv->tv_usec >= 1000000) {
283 tv->tv_usec -= 1000000;
287 #define NICE_LEVEL (-15)
289 void pa_raise_priority(void) {
290 if (setpriority(PRIO_PROCESS, 0, NICE_LEVEL) < 0)
291 pa_log(__FILE__": setpriority() failed: %s\n", strerror(errno));
293 pa_log(__FILE__": Successfully gained nice level %i.\n", NICE_LEVEL);
295 #ifdef _POSIX_PRIORITY_SCHEDULING
297 struct sched_param sp;
299 if (sched_getparam(0, &sp) < 0) {
300 pa_log(__FILE__": sched_getparam() failed: %s\n", strerror(errno));
304 sp.sched_priority = 1;
305 if (sched_setscheduler(0, SCHED_FIFO, &sp) < 0) {
306 pa_log(__FILE__": sched_setscheduler() failed: %s\n", strerror(errno));
310 pa_log(__FILE__": Successfully enabled SCHED_FIFO scheduling.\n");
315 void pa_reset_priority(void) {
316 #ifdef _POSIX_PRIORITY_SCHEDULING
318 struct sched_param sp;
319 sched_getparam(0, &sp);
320 sp.sched_priority = 0;
321 sched_setscheduler(0, SCHED_OTHER, &sp);
325 setpriority(PRIO_PROCESS, 0, 0);
328 int pa_fd_set_cloexec(int fd, int b) {
332 if ((v = fcntl(fd, F_GETFD, 0)) < 0)
335 v = (v & ~FD_CLOEXEC) | (b ? FD_CLOEXEC : 0);
337 if (fcntl(fd, F_SETFD, v) < 0)
343 char *pa_get_binary_name(char *s, size_t l) {
348 /* This works on Linux only */
350 snprintf(path, sizeof(path), "/proc/%u/exe", (unsigned) getpid());
351 if ((i = readlink(path, s, l-1)) < 0)
358 char *pa_path_get_filename(const char *p) {
361 if ((fn = strrchr(p, '/')))
367 int pa_parse_boolean(const char *v) {
369 if (!strcmp(v, "1") || !strcasecmp(v, "yes") || !strcasecmp(v, "y") || !strcasecmp(v, "on"))
371 else if (!strcmp(v, "0") || !strcasecmp(v, "no") || !strcasecmp(v, "n") || !strcasecmp(v, "off"))
377 char *pa_split(const char *c, const char *delimiter, const char**state) {
378 const char *current = *state ? *state : c;
384 l = strcspn(current, delimiter);
390 return pa_xstrndup(current, l);
393 const char *pa_strsignal(int sig) {
395 case SIGINT: return "SIGINT";
396 case SIGTERM: return "SIGTERM";
397 case SIGUSR1: return "SIGUSR1";
398 case SIGUSR2: return "SIGUSR2";
399 case SIGXCPU: return "SIGXCPU";
400 case SIGPIPE: return "SIGPIPE";
401 case SIGCHLD: return "SIGCHLD";
402 default: return "UNKNOWN SIGNAL";