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-rw-r--r--src/pulsecore/core-util.c788
1 files changed, 662 insertions, 126 deletions
diff --git a/src/pulsecore/core-util.c b/src/pulsecore/core-util.c
index a644b664..d259fb16 100644
--- a/src/pulsecore/core-util.c
+++ b/src/pulsecore/core-util.c
@@ -1,5 +1,3 @@
-/* $Id$ */
-
/***
This file is part of PulseAudio.
@@ -41,6 +39,7 @@
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
+#include <dirent.h>
#ifdef HAVE_STRTOF_L
#include <locale.h>
@@ -103,12 +102,6 @@
#define MSG_NOSIGNAL 0
#endif
-#ifndef OS_IS_WIN32
-#define PA_USER_RUNTIME_PATH_PREFIX "/tmp/pulse-"
-#else
-#define PA_USER_RUNTIME_PATH_PREFIX "%TEMP%\\pulse-"
-#endif
-
#ifdef OS_IS_WIN32
#define PULSE_ROOTENV "PULSE_ROOT"
@@ -221,7 +214,7 @@ int pa_make_secure_dir(const char* dir, mode_t m, uid_t uid, gid_t gid) {
goto fail;
}
#else
- pa_log_warn("secure directory creation not supported on Win32.");
+ pa_log_warn("Secure directory creation not supported on Win32.");
#endif
return 0;
@@ -512,8 +505,10 @@ char *pa_strlcpy(char *b, const char *s, size_t l) {
return b;
}
-/* Make the current thread a realtime thread*/
-void pa_make_realtime(void) {
+/* Make the current thread a realtime thread, and acquire the highest
+ * rtprio we can get that is less or equal the specified parameter. If
+ * the thread is already realtime, don't do anything. */
+int pa_make_realtime(int rtprio) {
#ifdef _POSIX_PRIORITY_SCHEDULING
struct sched_param sp;
@@ -524,55 +519,169 @@ void pa_make_realtime(void) {
if ((r = pthread_getschedparam(pthread_self(), &policy, &sp)) != 0) {
pa_log("pthread_getschedgetparam(): %s", pa_cstrerror(r));
- return;
+ return -1;
+ }
+
+ if (policy == SCHED_FIFO && sp.sched_priority >= rtprio) {
+ pa_log_info("Thread already being scheduled with SCHED_FIFO with priority %i.", sp.sched_priority);
+ return 0;
}
- sp.sched_priority = 1;
+ sp.sched_priority = rtprio;
if ((r = pthread_setschedparam(pthread_self(), SCHED_FIFO, &sp)) != 0) {
+
+ while (sp.sched_priority > 1) {
+ sp.sched_priority --;
+
+ if ((r = pthread_setschedparam(pthread_self(), SCHED_FIFO, &sp)) == 0) {
+ pa_log_info("Successfully enabled SCHED_FIFO scheduling for thread, with priority %i, which is lower than the requested %i.", sp.sched_priority, rtprio);
+ return 0;
+ }
+ }
+
pa_log_warn("pthread_setschedparam(): %s", pa_cstrerror(r));
- return;
+ return -1;
+ }
+
+ pa_log_info("Successfully enabled SCHED_FIFO scheduling for thread, with priority %i.", sp.sched_priority);
+ return 0;
+#else
+ return -1;
+#endif
+}
+
+/* This is merely used for giving the user a hint. This is not correct
+ * for anything security related */
+pa_bool_t pa_can_realtime(void) {
+
+ if (geteuid() == 0)
+ return TRUE;
+
+#if defined(HAVE_SYS_RESOURCE_H) && defined(RLIMIT_RTPRIO)
+ {
+ struct rlimit rl;
+
+ if (getrlimit(RLIMIT_RTPRIO, &rl) >= 0)
+ if (rl.rlim_cur > 0 || rl.rlim_cur == RLIM_INFINITY)
+ return TRUE;
}
+#endif
+
+#if defined(HAVE_SYS_CAPABILITY_H) && defined(CAP_SYS_NICE)
+ {
+ cap_t cap;
- pa_log_info("Successfully enabled SCHED_FIFO scheduling for thread.");
+ if ((cap = cap_get_proc())) {
+ cap_flag_value_t flag = CAP_CLEAR;
+
+ if (cap_get_flag(cap, CAP_SYS_NICE, CAP_EFFECTIVE, &flag) >= 0)
+ if (flag == CAP_SET) {
+ cap_free(cap);
+ return TRUE;
+ }
+
+ cap_free(cap);
+ }
+ }
#endif
+ return FALSE;
}
-#define NICE_LEVEL (-11)
+/* This is merely used for giving the user a hint. This is not correct
+ * for anything security related */
+pa_bool_t pa_can_high_priority(void) {
+
+ if (geteuid() == 0)
+ return TRUE;
+
+#if defined(HAVE_SYS_RESOURCE_H) && defined(RLIMIT_RTPRIO)
+ {
+ struct rlimit rl;
-/* Raise the priority of the current process as much as possible and
-sensible: set the nice level to -15.*/
-void pa_raise_priority(void) {
+ if (getrlimit(RLIMIT_NICE, &rl) >= 0)
+ if (rl.rlim_cur >= 21 || rl.rlim_cur == RLIM_INFINITY)
+ return TRUE;
+ }
+#endif
+
+#if defined(HAVE_SYS_CAPABILITY_H) && defined(CAP_SYS_NICE)
+ {
+ cap_t cap;
+
+ if ((cap = cap_get_proc())) {
+ cap_flag_value_t flag = CAP_CLEAR;
+
+ if (cap_get_flag(cap, CAP_SYS_NICE, CAP_EFFECTIVE, &flag) >= 0)
+ if (flag == CAP_SET) {
+ cap_free(cap);
+ return TRUE;
+ }
+
+ cap_free(cap);
+ }
+ }
+#endif
+
+ return FALSE;
+}
+
+/* Raise the priority of the current process as much as possible that
+ * is <= the specified nice level..*/
+int pa_raise_priority(int nice_level) {
#ifdef HAVE_SYS_RESOURCE_H
- if (setpriority(PRIO_PROCESS, 0, NICE_LEVEL) < 0)
+ if (setpriority(PRIO_PROCESS, 0, nice_level) < 0) {
+ int n;
+
+ for (n = nice_level+1; n < 0; n++) {
+
+ if (setpriority(PRIO_PROCESS, 0, n) == 0) {
+ pa_log_info("Successfully acquired nice level %i, which is lower than the requested %i.", n, nice_level);
+ return 0;
+ }
+ }
+
pa_log_warn("setpriority(): %s", pa_cstrerror(errno));
- else
- pa_log_info("Successfully gained nice level %i.", NICE_LEVEL);
+ return -1;
+ }
+
+ pa_log_info("Successfully gained nice level %i.", nice_level);
#endif
#ifdef OS_IS_WIN32
- if (!SetPriorityClass(GetCurrentProcess(), HIGH_PRIORITY_CLASS))
- pa_log_warn("SetPriorityClass() failed: 0x%08X", GetLastError());
- else
- pa_log_info("Successfully gained high priority class.");
+ if (nice_level < 0) {
+ if (!SetPriorityClass(GetCurrentProcess(), HIGH_PRIORITY_CLASS)) {
+ pa_log_warn("SetPriorityClass() failed: 0x%08X", GetLastError());
+ return .-1;
+ } else
+ pa_log_info("Successfully gained high priority class.");
+ }
#endif
+
+ return 0;
}
/* Reset the priority to normal, inverting the changes made by
- * pa_raise_priority() */
+ * pa_raise_priority() and pa_make_realtime()*/
void pa_reset_priority(void) {
-#ifdef OS_IS_WIN32
- SetPriorityClass(GetCurrentProcess(), NORMAL_PRIORITY_CLASS);
-#endif
-
#ifdef HAVE_SYS_RESOURCE_H
+ struct sched_param sp;
+
setpriority(PRIO_PROCESS, 0, 0);
+
+ memset(&sp, 0, sizeof(sp));
+ pa_assert_se(pthread_setschedparam(pthread_self(), SCHED_OTHER, &sp) == 0);
+#endif
+
+#ifdef OS_IS_WIN32
+ SetPriorityClass(GetCurrentProcess(), NORMAL_PRIORITY_CLASS);
#endif
}
/* Try to parse a boolean string value.*/
int pa_parse_boolean(const char *v) {
+ pa_assert(v);
if (!strcmp(v, "1") || v[0] == 'y' || v[0] == 'Y' || v[0] == 't' || v[0] == 'T' || !strcasecmp(v, "on"))
return 1;
@@ -1033,12 +1142,13 @@ fail:
/* Unlock a temporary lcok file */
int pa_unlock_lockfile(const char *fn, int fd) {
int r = 0;
- pa_assert(fn);
pa_assert(fd >= 0);
- if (unlink(fn) < 0) {
- pa_log_warn("Unable to remove lock file '%s': %s", fn, pa_cstrerror(errno));
- r = -1;
+ if (fn) {
+ if (unlink(fn) < 0) {
+ pa_log_warn("Unable to remove lock file '%s': %s", fn, pa_cstrerror(errno));
+ r = -1;
+ }
}
if (pa_lock_fd(fd, 0) < 0) {
@@ -1054,16 +1164,58 @@ int pa_unlock_lockfile(const char *fn, int fd) {
return r;
}
+static char *get_dir(mode_t m, const char *env_name) {
+ const char *e;
+ char *d;
+
+ if ((e = getenv(env_name)))
+ d = pa_xstrdup(e);
+ else {
+ char h[PATH_MAX];
+ struct stat st;
+
+ if (!pa_get_home_dir(h, sizeof(h))) {
+ pa_log_error("Failed to get home directory.");
+ return NULL;
+ }
+
+ if (stat(h, &st) < 0) {
+ pa_log_error("Failed to stat home directory %s: %s", h, pa_cstrerror(errno));
+ return NULL;
+ }
+
+ if (st.st_uid != getuid()) {
+ pa_log_error("Home directory %s not ours.", d);
+ return NULL;
+ }
+
+ d = pa_sprintf_malloc("%s" PA_PATH_SEP ".pulse", h);
+ }
+
+ if (pa_make_secure_dir(d, m, (pid_t) -1, (pid_t) -1) < 0) {
+ pa_log_error("Failed to create secure directory: %s", pa_cstrerror(errno));
+ return NULL;
+ }
+
+ return d;
+}
+
+char *pa_get_runtime_dir(void) {
+ return get_dir(pa_in_system_mode() ? 0755 : 0700, "PULSE_RUNTIME_PATH");
+}
+
+char *pa_get_state_dir(void) {
+ return get_dir(0700, "PULSE_STATE_PATH");
+}
+
/* Try to open a configuration file. If "env" is specified, open the
* value of the specified environment variable. Otherwise look for a
* file "local" in the home directory or a file "global" in global
* file system. If "result" is non-NULL, a pointer to a newly
* allocated buffer containing the used configuration file is
* stored there.*/
-FILE *pa_open_config_file(const char *global, const char *local, const char *env, char **result, const char *mode) {
+FILE *pa_open_config_file(const char *global, const char *local, const char *env, char **result) {
const char *fn;
- char h[PATH_MAX];
-
#ifdef OS_IS_WIN32
char buf[PATH_MAX];
@@ -1072,68 +1224,152 @@ FILE *pa_open_config_file(const char *global, const char *local, const char *env
#endif
if (env && (fn = getenv(env))) {
+ FILE *f;
+
#ifdef OS_IS_WIN32
if (!ExpandEnvironmentStrings(fn, buf, PATH_MAX))
return NULL;
fn = buf;
#endif
- if (result)
- *result = pa_xstrdup(fn);
+ if ((f = fopen(fn, "r"))) {
+ if (result)
+ *result = pa_xstrdup(fn);
- return fopen(fn, mode);
+ return f;
+ }
+
+ pa_log_warn("Failed to open configuration file '%s': %s", fn, pa_cstrerror(errno));
+ return NULL;
}
if (local) {
const char *e;
- char *lfn = NULL;
+ char *lfn;
+ char h[PATH_MAX];
+ FILE *f;
if ((e = getenv("PULSE_CONFIG_PATH")))
- fn = lfn = pa_sprintf_malloc("%s/%s", e, local);
+ fn = lfn = pa_sprintf_malloc("%s" PA_PATH_SEP "%s", e, local);
else if (pa_get_home_dir(h, sizeof(h)))
- fn = lfn = pa_sprintf_malloc("%s/.pulse/%s", h, local);
-
- if (lfn) {
- FILE *f;
+ fn = lfn = pa_sprintf_malloc("%s" PA_PATH_SEP ".pulse" PA_PATH_SEP "%s", h, local);
#ifdef OS_IS_WIN32
- if (!ExpandEnvironmentStrings(lfn, buf, PATH_MAX))
- return NULL;
- fn = buf;
+ if (!ExpandEnvironmentStrings(lfn, buf, PATH_MAX)) {
+ pa_xfree(lfn);
+ return NULL;
+ }
+ fn = buf;
#endif
- f = fopen(fn, mode);
- if (f != NULL) {
- if (result)
- *result = pa_xstrdup(fn);
- pa_xfree(lfn);
- return f;
- }
+ if ((f = fopen(fn, "r"))) {
+ if (result)
+ *result = pa_xstrdup(fn);
- if (errno != ENOENT)
- pa_log_warn("Failed to open configuration file '%s': %s", lfn, pa_cstrerror(errno));
+ pa_xfree(lfn);
+ return f;
+ }
+ if (errno != ENOENT) {
+ pa_log_warn("Failed to open configuration file '%s': %s", fn, pa_cstrerror(errno));
pa_xfree(lfn);
+ return NULL;
}
+
+ pa_xfree(lfn);
}
- if (!global) {
- if (result)
- *result = NULL;
+ if (global) {
+ FILE *f;
+
+#ifdef OS_IS_WIN32
+ if (!ExpandEnvironmentStrings(global, buf, PATH_MAX))
+ return NULL;
+ global = buf;
+#endif
+
+ if ((f = fopen(global, "r"))) {
+
+ if (result)
+ *result = pa_xstrdup(global);
+
+ return f;
+ }
+ } else
errno = ENOENT;
+
+ return NULL;
+}
+
+char *pa_find_config_file(const char *global, const char *local, const char *env) {
+ const char *fn;
+#ifdef OS_IS_WIN32
+ char buf[PATH_MAX];
+
+ if (!getenv(PULSE_ROOTENV))
+ pa_set_root(NULL);
+#endif
+
+ if (env && (fn = getenv(env))) {
+#ifdef OS_IS_WIN32
+ if (!ExpandEnvironmentStrings(fn, buf, PATH_MAX))
+ return NULL;
+ fn = buf;
+#endif
+
+ if (access(fn, R_OK) == 0)
+ return pa_xstrdup(fn);
+
+ pa_log_warn("Failed to access configuration file '%s': %s", fn, pa_cstrerror(errno));
return NULL;
}
+ if (local) {
+ const char *e;
+ char *lfn;
+ char h[PATH_MAX];
+
+ if ((e = getenv("PULSE_CONFIG_PATH")))
+ fn = lfn = pa_sprintf_malloc("%s" PA_PATH_SEP "%s", e, local);
+ else if (pa_get_home_dir(h, sizeof(h)))
+ fn = lfn = pa_sprintf_malloc("%s" PA_PATH_SEP ".pulse" PA_PATH_SEP "%s", h, local);
+
#ifdef OS_IS_WIN32
- if (!ExpandEnvironmentStrings(global, buf, PATH_MAX))
- return NULL;
- global = buf;
+ if (!ExpandEnvironmentStrings(lfn, buf, PATH_MAX)) {
+ pa_xfree(lfn);
+ return NULL;
+ }
+ fn = buf;
#endif
- if (result)
- *result = pa_xstrdup(global);
+ if (access(fn, R_OK) == 0) {
+ char *r = pa_xstrdup(fn);
+ pa_xfree(lfn);
+ return r;
+ }
+
+ if (errno != ENOENT) {
+ pa_log_warn("Failed to access configuration file '%s': %s", fn, pa_cstrerror(errno));
+ pa_xfree(lfn);
+ return NULL;
+ }
+
+ pa_xfree(lfn);
+ }
+
+ if (global) {
+#ifdef OS_IS_WIN32
+ if (!ExpandEnvironmentStrings(global, buf, PATH_MAX))
+ return NULL;
+ global = buf;
+#endif
- return fopen(global, mode);
+ if (access(fn, R_OK) == 0)
+ return pa_xstrdup(global);
+ } else
+ errno = ENOENT;
+
+ return NULL;
}
/* Format the specified data as a hexademical string */
@@ -1200,7 +1436,7 @@ size_t pa_parsehex(const char *p, uint8_t *d, size_t dlength) {
}
/* Returns nonzero when *s starts with *pfx */
-int pa_startswith(const char *s, const char *pfx) {
+pa_bool_t pa_startswith(const char *s, const char *pfx) {
size_t l;
pa_assert(s);
@@ -1212,7 +1448,7 @@ int pa_startswith(const char *s, const char *pfx) {
}
/* Returns nonzero when *s ends with *sfx */
-int pa_endswith(const char *s, const char *sfx) {
+pa_bool_t pa_endswith(const char *s, const char *sfx) {
size_t l1, l2;
pa_assert(s);
@@ -1224,45 +1460,62 @@ int pa_endswith(const char *s, const char *sfx) {
return l1 >= l2 && strcmp(s+l1-l2, sfx) == 0;
}
-/* if fn is null return the PulseAudio run time path in s (/tmp/pulse)
- * if fn is non-null and starts with / return fn in s
- * otherwise append fn to the run time path and return it in s */
-char *pa_runtime_path(const char *fn, char *s, size_t l) {
- const char *e;
+pa_bool_t pa_is_path_absolute(const char *fn) {
+ pa_assert(fn);
#ifndef OS_IS_WIN32
- if (fn && *fn == '/')
+ return *fn == '/';
#else
- if (fn && strlen(fn) >= 3 && isalpha(fn[0]) && fn[1] == ':' && fn[2] == '\\')
+ return strlen(fn) >= 3 && isalpha(fn[0]) && fn[1] == ':' && fn[2] == '\\';
#endif
- return pa_strlcpy(s, fn, l);
+}
- if ((e = getenv("PULSE_RUNTIME_PATH"))) {
+char *pa_make_path_absolute(const char *p) {
+ char *r;
+ char *cwd;
- if (fn)
- pa_snprintf(s, l, "%s%c%s", e, PA_PATH_SEP_CHAR, fn);
- else
- pa_snprintf(s, l, "%s", e);
+ pa_assert(p);
- } else {
- char u[256];
+ if (pa_is_path_absolute(p))
+ return pa_xstrdup(p);
- if (fn)
- pa_snprintf(s, l, "%s%s%c%s", PA_USER_RUNTIME_PATH_PREFIX, pa_get_user_name(u, sizeof(u)), PA_PATH_SEP_CHAR, fn);
- else
- pa_snprintf(s, l, "%s%s", PA_USER_RUNTIME_PATH_PREFIX, pa_get_user_name(u, sizeof(u)));
- }
+ if (!(cwd = pa_getcwd()))
+ return pa_xstrdup(p);
+
+ r = pa_sprintf_malloc("%s" PA_PATH_SEP "%s", cwd, p);
+ pa_xfree(cwd);
+ return r;
+}
+/* if fn is null return the PulseAudio run time path in s (~/.pulse)
+ * if fn is non-null and starts with / return fn
+ * otherwise append fn to the run time path and return it */
+static char *get_path(const char *fn, pa_bool_t rt) {
+ char *rtp;
-#ifdef OS_IS_WIN32
- {
- char buf[l];
- strcpy(buf, s);
- ExpandEnvironmentStrings(buf, s, l);
- }
-#endif
+ if (pa_is_path_absolute(fn))
+ return pa_xstrdup(fn);
- return s;
+ rtp = rt ? pa_get_runtime_dir() : pa_get_state_dir();
+
+ if (!rtp)
+ return NULL;
+
+ if (fn) {
+ char *r;
+ r = pa_sprintf_malloc("%s" PA_PATH_SEP "%s", rtp, fn);
+ pa_xfree(rtp);
+ return r;
+ } else
+ return rtp;
+}
+
+char *pa_runtime_path(const char *fn) {
+ return get_path(fn, 1);
+}
+
+char *pa_state_path(const char *fn) {
+ return get_path(fn, 0);
}
/* Convert the string s to a signed integer in *ret_i */
@@ -1317,13 +1570,13 @@ static void c_locale_destroy(void) {
}
#endif
-int pa_atof(const char *s, float *ret_f) {
+int pa_atod(const char *s, double *ret_d) {
char *x = NULL;
- float f;
+ double f;
int r = 0;
pa_assert(s);
- pa_assert(ret_f);
+ pa_assert(ret_d);
/* This should be locale independent */
@@ -1338,22 +1591,18 @@ int pa_atof(const char *s, float *ret_f) {
if (c_locale) {
errno = 0;
- f = strtof_l(s, &x, c_locale);
+ f = strtod_l(s, &x, c_locale);
} else
#endif
{
errno = 0;
-#ifdef HAVE_STRTOF
- f = strtof(s, &x);
-#else
f = strtod(s, &x);
-#endif
}
if (!x || *x || errno != 0)
r = -1;
else
- *ret_f = f;
+ *ret_d = f;
return r;
}
@@ -1368,12 +1617,28 @@ int pa_snprintf(char *str, size_t size, const char *format, ...) {
pa_assert(format);
va_start(ap, format);
- ret = vsnprintf(str, size, format, ap);
+ ret = pa_vsnprintf(str, size, format, ap);
va_end(ap);
+ return ret;
+}
+
+/* Same as vsnprintf, but guarantees NUL-termination on every platform */
+int pa_vsnprintf(char *str, size_t size, const char *format, va_list ap) {
+ int ret;
+
+ pa_assert(str);
+ pa_assert(size > 0);
+ pa_assert(format);
+
+ ret = vsnprintf(str, size, format, ap);
+
str[size-1] = 0;
- return ret;
+ if (ret < 0)
+ ret = strlen(str);
+
+ return PA_MIN((int) size-1, ret);
}
/* Truncate the specified string, but guarantee that the string
@@ -1409,23 +1674,6 @@ char *pa_getcwd(void) {
}
}
-char *pa_make_path_absolute(const char *p) {
- char *r;
- char *cwd;
-
- pa_assert(p);
-
- if (p[0] == '/')
- return pa_xstrdup(p);
-
- if (!(cwd = pa_getcwd()))
- return pa_xstrdup(p);
-
- r = pa_sprintf_malloc("%s/%s", cwd, p);
- pa_xfree(cwd);
- return r;
-}
-
void *pa_will_need(const void *p, size_t l) {
#ifdef RLIMIT_MEMLOCK
struct rlimit rlim;
@@ -1507,3 +1755,291 @@ void pa_close_pipe(int fds[2]) {
fds[0] = fds[1] = -1;
}
+
+char *pa_readlink(const char *p) {
+ size_t l = 100;
+
+ for (;;) {
+ char *c;
+ ssize_t n;
+
+ c = pa_xnew(char, l);
+
+ if ((n = readlink(p, c, l-1)) < 0) {
+ pa_xfree(c);
+ return NULL;
+ }
+
+ if ((size_t) n < l-1) {
+ c[n] = 0;
+ return c;
+ }
+
+ pa_xfree(c);
+ l *= 2;
+ }
+}
+
+int pa_close_all(int except_fd, ...) {
+ va_list ap;
+ int n = 0, i, r;
+ int *p;
+
+ va_start(ap, except_fd);
+
+ if (except_fd >= 0)
+ for (n = 1; va_arg(ap, int) >= 0; n++)
+ ;
+
+ va_end(ap);
+
+ p = pa_xnew(int, n+1);
+
+ va_start(ap, except_fd);
+
+ i = 0;
+ if (except_fd >= 0) {
+ int fd;
+ p[i++] = except_fd;
+
+ while ((fd = va_arg(ap, int)) >= 0)
+ p[i++] = fd;
+ }
+ p[i] = -1;
+
+ va_end(ap);
+
+ r = pa_close_allv(p);
+ free(p);
+
+ return r;
+}
+
+int pa_close_allv(const int except_fds[]) {
+ struct rlimit rl;
+ int fd;
+ int saved_errno;
+
+#ifdef __linux__
+
+ DIR *d;
+
+ if ((d = opendir("/proc/self/fd"))) {
+
+ struct dirent *de;
+
+ while ((de = readdir(d))) {
+ pa_bool_t found;
+ long l;
+ char *e = NULL;
+ int i;
+
+ if (de->d_name[0] == '.')
+ continue;
+
+ errno = 0;
+ l = strtol(de->d_name, &e, 10);
+ if (errno != 0 || !e || *e) {
+ closedir(d);
+ errno = EINVAL;
+ return -1;
+ }
+
+ fd = (int) l;
+
+ if ((long) fd != l) {
+ closedir(d);
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (fd < 3)
+ continue;
+
+ if (fd == dirfd(d))
+ continue;
+
+ found = FALSE;
+ for (i = 0; except_fds[i] >= 0; i++)
+ if (except_fds[i] == fd) {
+ found = TRUE;
+ break;
+ }
+
+ if (found)
+ continue;
+
+ if (pa_close(fd) < 0) {
+ saved_errno = errno;
+ closedir(d);
+ errno = saved_errno;
+
+ return -1;
+ }
+ }
+
+ closedir(d);
+ return 0;
+ }
+
+#endif
+
+ if (getrlimit(RLIMIT_NOFILE, &rl) < 0)
+ return -1;
+
+ for (fd = 0; fd < (int) rl.rlim_max; fd++) {
+ int i;
+
+ if (fd <= 3)
+ continue;
+
+ for (i = 0; except_fds[i] >= 0; i++)
+ if (except_fds[i] == fd)
+ continue;
+
+ if (close(fd) < 0 && errno != EBADF)
+ return -1;
+ }
+
+ return 0;
+}
+
+int pa_unblock_sigs(int except, ...) {
+ va_list ap;
+ int n = 0, i, r;
+ int *p;
+
+ va_start(ap, except);
+
+ if (except >= 1)
+ for (n = 1; va_arg(ap, int) >= 0; n++)
+ ;
+
+ va_end(ap);
+
+ p = pa_xnew(int, n+1);
+
+ va_start(ap, except);
+
+ i = 0;
+ if (except >= 1) {
+ int sig;
+ p[i++] = except;
+
+ while ((sig = va_arg(ap, int)) >= 0)
+ p[i++] = sig;
+ }
+ p[i] = -1;
+
+ va_end(ap);
+
+ r = pa_unblock_sigsv(p);
+ pa_xfree(p);
+
+ return r;
+}
+
+int pa_unblock_sigsv(const int except[]) {
+ int i;
+ sigset_t ss;
+
+ if (sigemptyset(&ss) < 0)
+ return -1;
+
+ for (i = 0; except[i] > 0; i++)
+ if (sigaddset(&ss, except[i]) < 0)
+ return -1;
+
+ return sigprocmask(SIG_SETMASK, &ss, NULL);
+}
+
+int pa_reset_sigs(int except, ...) {
+ va_list ap;
+ int n = 0, i, r;
+ int *p;
+
+ va_start(ap, except);
+
+ if (except >= 1)
+ for (n = 1; va_arg(ap, int) >= 0; n++)
+ ;
+
+ va_end(ap);
+
+ p = pa_xnew(int, n+1);
+
+ va_start(ap, except);
+
+ i = 0;
+ if (except >= 1) {
+ p[i++] = except;
+
+ while ((p[i++] = va_arg(ap, int)) >= 0)
+ ;
+ }
+ p[i] = -1;
+
+ va_end(ap);
+
+ r = pa_reset_sigsv(p);
+ pa_xfree(p);
+
+ return r;
+}
+
+int pa_reset_sigsv(const int except[]) {
+ int sig;
+
+ for (sig = 1; sig < _NSIG; sig++) {
+ pa_bool_t reset = TRUE;
+
+ switch (sig) {
+ case SIGKILL:
+ case SIGSTOP:
+ reset = FALSE;
+ break;
+
+ default: {
+ int i;
+
+ for (i = 0; except[i] > 0; i++) {
+ if (sig == except[i]) {
+ reset = FALSE;
+ break;
+ }
+ }
+ }
+ }
+
+ if (reset) {
+ struct sigaction sa;
+
+ memset(&sa, 0, sizeof(sa));
+ sa.sa_handler = SIG_DFL;
+
+ /* On Linux the first two RT signals are reserved by
+ * glibc, and sigaction() will return EINVAL for them. */
+ if ((sigaction(sig, &sa, NULL) < 0))
+ if (errno != EINVAL)
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+void pa_set_env(const char *key, const char *value) {
+ pa_assert(key);
+ pa_assert(value);
+
+ putenv(pa_sprintf_malloc("%s=%s", key, value));
+}
+
+pa_bool_t pa_in_system_mode(void) {
+ const char *e;
+
+ if (!(e = getenv("PULSE_SYSTEM")))
+ return FALSE;
+
+ return !!atoi(e);
+}
generated by cgit (git 2.34.1) at 2025-07-19 03:46:12 +0000