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>
47 void pa_make_nonblock_fd(int fd) {
50 if ((v = fcntl(fd, F_GETFL)) >= 0)
51 if (!(v & O_NONBLOCK))
52 fcntl(fd, F_SETFL, v|O_NONBLOCK);
55 int pa_make_secure_dir(const char* dir) {
58 if (mkdir(dir, 0700) < 0)
62 if (lstat(dir, &st) < 0)
65 if (!S_ISDIR(st.st_mode) || (st.st_uid != getuid()) || ((st.st_mode & 0777) != 0700))
75 ssize_t pa_loop_read(int fd, void*data, size_t size) {
77 assert(fd >= 0 && data && size);
82 if ((r = read(fd, data, size)) < 0)
89 data = (uint8_t*) data + r;
96 ssize_t pa_loop_write(int fd, const void*data, size_t size) {
98 assert(fd >= 0 && data && size);
103 if ((r = write(fd, data, size)) < 0)
110 data = (uint8_t*) data + r;
117 void pa_check_for_sigpipe(void) {
122 if (pthread_sigmask(SIG_SETMASK, NULL, &set) < 0) {
124 if (sigprocmask(SIG_SETMASK, NULL, &set) < 0) {
125 pa_log(__FILE__": sigprocmask() failed: %s\n", strerror(errno));
132 if (sigismember(&set, SIGPIPE))
135 if (sigaction(SIGPIPE, NULL, &sa) < 0) {
136 pa_log(__FILE__": sigaction() failed: %s\n", strerror(errno));
140 if (sa.sa_handler != SIG_DFL)
143 pa_log(__FILE__": WARNING: SIGPIPE is not trapped. This might cause malfunction!\n");
146 /* The following is based on an example from the GNU libc documentation */
147 char *pa_sprintf_malloc(const char *format, ...) {
157 c = pa_xrealloc(c, size);
159 va_start(ap, format);
160 r = vsnprintf(c, size, format, ap);
163 if (r > -1 && r < size)
166 if (r > -1) /* glibc 2.1 */
173 char *pa_vsprintf_malloc(const char *format, va_list ap) {
183 c = pa_xrealloc(c, size);
184 r = vsnprintf(c, size, format, ap);
186 if (r > -1 && r < size)
189 if (r > -1) /* glibc 2.1 */
197 char *pa_get_user_name(char *s, size_t l) {
198 struct passwd pw, *r;
202 if (!(p = getenv("USER")))
203 if (!(p = getenv("LOGNAME")))
204 if (!(p = getenv("USERNAME"))) {
206 if (getpwuid_r(getuid(), &pw, buf, sizeof(buf), &r) != 0 || !r) {
207 snprintf(s, l, "%lu", (unsigned long) getuid());
214 snprintf(s, l, "%s", p);
218 char *pa_get_host_name(char *s, size_t l) {
224 uint32_t pa_age(struct timeval *tv) {
232 gettimeofday(&now, NULL);
234 r = (now.tv_sec-tv->tv_sec) * 1000000;
236 if (now.tv_usec >= tv->tv_usec)
237 r += now.tv_usec - tv->tv_usec;
239 r -= tv->tv_usec - now.tv_usec;
244 #define NICE_LEVEL (-15)
246 void pa_raise_priority(void) {
247 if (setpriority(PRIO_PROCESS, 0, NICE_LEVEL) < 0)
248 pa_log(__FILE__": setpriority() failed: %s\n", strerror(errno));
250 pa_log(__FILE__": Successfully gained nice level %i.\n", NICE_LEVEL);
252 #ifdef _POSIX_PRIORITY_SCHEDULING
254 struct sched_param sp;
256 if (sched_getparam(0, &sp) < 0) {
257 pa_log(__FILE__": sched_getparam() failed: %s\n", strerror(errno));
261 sp.sched_priority = 1;
262 if (sched_setscheduler(0, SCHED_FIFO, &sp) < 0) {
263 pa_log(__FILE__": sched_setscheduler() failed: %s\n", strerror(errno));
267 pa_log(__FILE__": Successfully enabled SCHED_FIFO scheduling.\n");
272 void pa_reset_priority(void) {
273 #ifdef _POSIX_PRIORITY_SCHEDULING
275 struct sched_param sp;
276 sched_getparam(0, &sp);
277 sp.sched_priority = 0;
278 sched_setscheduler(0, SCHED_OTHER, &sp);
282 setpriority(PRIO_PROCESS, 0, 0);
285 int pa_fd_set_cloexec(int fd, int b) {
289 if ((v = fcntl(fd, F_GETFD, 0)) < 0)
292 v = (v & ~FD_CLOEXEC) | (b ? FD_CLOEXEC : 0);
294 if (fcntl(fd, F_SETFD, v) < 0)