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>
44 #include <samplerate.h>
50 void pa_make_nonblock_fd(int fd) {
53 if ((v = fcntl(fd, F_GETFL)) >= 0)
54 if (!(v & O_NONBLOCK))
55 fcntl(fd, F_SETFL, v|O_NONBLOCK);
58 int pa_make_secure_dir(const char* dir) {
61 if (mkdir(dir, 0700) < 0)
65 if (lstat(dir, &st) < 0)
68 if (!S_ISDIR(st.st_mode) || (st.st_uid != getuid()) || ((st.st_mode & 0777) != 0700))
78 ssize_t pa_loop_read(int fd, void*data, size_t size) {
80 assert(fd >= 0 && data && size);
85 if ((r = read(fd, data, size)) < 0)
92 data = (uint8_t*) data + r;
99 ssize_t pa_loop_write(int fd, const void*data, size_t size) {
101 assert(fd >= 0 && data && size);
106 if ((r = write(fd, data, size)) < 0)
113 data = (uint8_t*) data + r;
120 void pa_check_signal_is_blocked(int sig) {
125 if (pthread_sigmask(SIG_SETMASK, NULL, &set) < 0) {
127 if (sigprocmask(SIG_SETMASK, NULL, &set) < 0) {
128 pa_log(__FILE__": sigprocmask() failed: %s\n", strerror(errno));
135 if (sigismember(&set, sig))
138 if (sigaction(sig, NULL, &sa) < 0) {
139 pa_log(__FILE__": sigaction() failed: %s\n", strerror(errno));
143 if (sa.sa_handler != SIG_DFL)
146 pa_log(__FILE__": WARNING: %s is not trapped. This might cause malfunction!\n", pa_strsignal(sig));
149 /* The following is based on an example from the GNU libc documentation */
150 char *pa_sprintf_malloc(const char *format, ...) {
160 c = pa_xrealloc(c, size);
162 va_start(ap, format);
163 r = vsnprintf(c, size, format, ap);
166 if (r > -1 && r < size)
169 if (r > -1) /* glibc 2.1 */
176 char *pa_vsprintf_malloc(const char *format, va_list ap) {
186 c = pa_xrealloc(c, size);
187 r = vsnprintf(c, size, format, ap);
189 if (r > -1 && r < size)
192 if (r > -1) /* glibc 2.1 */
200 char *pa_get_user_name(char *s, size_t l) {
201 struct passwd pw, *r;
205 if (!(p = getenv("USER")))
206 if (!(p = getenv("LOGNAME")))
207 if (!(p = getenv("USERNAME"))) {
209 if (getpwuid_r(getuid(), &pw, buf, sizeof(buf), &r) != 0 || !r) {
210 snprintf(s, l, "%lu", (unsigned long) getuid());
217 snprintf(s, l, "%s", p);
221 char *pa_get_host_name(char *s, size_t l) {
227 pa_usec_t pa_timeval_diff(const struct timeval *a, const struct timeval *b) {
231 if (pa_timeval_cmp(a, b) < 0) {
232 const struct timeval *c;
238 r = ((pa_usec_t) a->tv_sec - b->tv_sec)* 1000000;
240 if (a->tv_usec > b->tv_usec)
241 r += ((pa_usec_t) a->tv_usec - b->tv_usec);
242 else if (a->tv_usec < b->tv_usec)
243 r -= ((pa_usec_t) b->tv_usec - a->tv_usec);
248 int pa_timeval_cmp(const struct timeval *a, const struct timeval *b) {
251 if (a->tv_sec < b->tv_sec)
254 if (a->tv_sec > b->tv_sec)
257 if (a->tv_usec < b->tv_usec)
260 if (a->tv_usec > b->tv_usec)
266 pa_usec_t pa_age(const struct timeval *tv) {
269 gettimeofday(&now, NULL);
270 return pa_timeval_diff(&now, tv);
273 void pa_timeval_add(struct timeval *tv, pa_usec_t v) {
278 tv->tv_sec += (unsigned long) secs;
283 while (tv->tv_usec >= 1000000) {
285 tv->tv_usec -= 1000000;
289 #define NICE_LEVEL (-15)
291 void pa_raise_priority(void) {
292 if (setpriority(PRIO_PROCESS, 0, NICE_LEVEL) < 0)
293 pa_log(__FILE__": setpriority() failed: %s\n", strerror(errno));
295 pa_log(__FILE__": Successfully gained nice level %i.\n", NICE_LEVEL);
297 #ifdef _POSIX_PRIORITY_SCHEDULING
299 struct sched_param sp;
301 if (sched_getparam(0, &sp) < 0) {
302 pa_log(__FILE__": sched_getparam() failed: %s\n", strerror(errno));
306 sp.sched_priority = 1;
307 if (sched_setscheduler(0, SCHED_FIFO, &sp) < 0) {
308 pa_log(__FILE__": sched_setscheduler() failed: %s\n", strerror(errno));
312 pa_log(__FILE__": Successfully enabled SCHED_FIFO scheduling.\n");
317 void pa_reset_priority(void) {
318 #ifdef _POSIX_PRIORITY_SCHEDULING
320 struct sched_param sp;
321 sched_getparam(0, &sp);
322 sp.sched_priority = 0;
323 sched_setscheduler(0, SCHED_OTHER, &sp);
327 setpriority(PRIO_PROCESS, 0, 0);
330 int pa_fd_set_cloexec(int fd, int b) {
334 if ((v = fcntl(fd, F_GETFD, 0)) < 0)
337 v = (v & ~FD_CLOEXEC) | (b ? FD_CLOEXEC : 0);
339 if (fcntl(fd, F_SETFD, v) < 0)
345 char *pa_get_binary_name(char *s, size_t l) {
350 /* This works on Linux only */
352 snprintf(path, sizeof(path), "/proc/%u/exe", (unsigned) getpid());
353 if ((i = readlink(path, s, l-1)) < 0)
360 char *pa_path_get_filename(const char *p) {
363 if ((fn = strrchr(p, '/')))
369 int pa_parse_boolean(const char *v) {
371 if (!strcmp(v, "1") || v[0] == 'y' || v[0] == 'Y' || v[0] == 't' || v[0] == 'T' || !strcasecmp(v, "on"))
373 else if (!strcmp(v, "0") || v[0] == 'n' || v[0] == 'N' || v[0] == 'f' || v[0] == 'F' || !strcasecmp(v, "off"))
379 char *pa_split(const char *c, const char *delimiter, const char**state) {
380 const char *current = *state ? *state : c;
386 l = strcspn(current, delimiter);
392 return pa_xstrndup(current, l);
395 #define WHITESPACE " \t\n"
397 char *pa_split_spaces(const char *c, const char **state) {
398 const char *current = *state ? *state : c;
404 current += strspn(current, WHITESPACE);
405 l = strcspn(current, WHITESPACE);
409 return pa_xstrndup(current, l);
412 const char *pa_strsignal(int sig) {
414 case SIGINT: return "SIGINT";
415 case SIGTERM: return "SIGTERM";
416 case SIGUSR1: return "SIGUSR1";
417 case SIGUSR2: return "SIGUSR2";
418 case SIGXCPU: return "SIGXCPU";
419 case SIGPIPE: return "SIGPIPE";
420 case SIGCHLD: return "SIGCHLD";
421 default: return "UNKNOWN SIGNAL";
425 int pa_parse_resample_method(const char *string) {
428 if (!strcmp(string, "sinc-best-quality"))
429 return SRC_SINC_BEST_QUALITY;
430 else if (!strcmp(string, "sinc-medium-quality"))
431 return SRC_SINC_MEDIUM_QUALITY;
432 else if (!strcmp(string, "sinc-fastest"))
433 return SRC_SINC_FASTEST;
434 else if (!strcmp(string, "zero-order-hold"))
435 return SRC_ZERO_ORDER_HOLD;
436 else if (!strcmp(string, "linear"))