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pulseaudio/src/polypcore/core-util.c
Pierre Ossman 1b72d02634 Fix some warnings. 
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@948 fefdeb5f-60dc-0310-8127-8f9354f1896f
2006-05-23 07:33:33 +00:00

1017 lines
23 KiB
C
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/* $Id$ */
/***
This file is part of polypaudio.
polypaudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
polypaudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with polypaudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdarg.h>
#include <stdlib.h>
#include <signal.h>
#include <errno.h>
#include <assert.h>
#include <string.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <limits.h>
#include <time.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#ifdef HAVE_SCHED_H
#include <sched.h>
#endif
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
#ifdef HAVE_PTHREAD
#include <pthread.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef HAVE_WINDOWS_H
#include <windows.h>
#endif
#ifdef HAVE_PWD_H
#include <pwd.h>
#endif
#ifdef HAVE_GRP_H
#include <grp.h>
#endif
#include <samplerate.h>
#include <polyp/error.h>
#include <polyp/xmalloc.h>
#include <polyp/util.h>
#include <polypcore/winsock.h>
#include <polypcore/log.h>
#include "core-util.h"
#ifndef OS_IS_WIN32
#define PA_RUNTIME_PATH_PREFIX "/tmp/polypaudio-"
#define PATH_SEP '/'
#else
#define PA_RUNTIME_PATH_PREFIX "%TEMP%\\polypaudio-"
#define PATH_SEP '\\'
#endif
#ifdef OS_IS_WIN32
#define POLYP_ROOTENV "POLYP_ROOT"
int pa_set_root(HANDLE handle) {
char library_path[MAX_PATH + sizeof(POLYP_ROOTENV) + 1], *sep;
strcpy(library_path, POLYP_ROOTENV "=");
if (!GetModuleFileName(handle, library_path + sizeof(POLYP_ROOTENV), MAX_PATH))
return 0;
sep = strrchr(library_path, '\\');
if (sep)
*sep = '\0';
if (_putenv(library_path) < 0)
return 0;
return 1;
}
#endif
/** Make a file descriptor nonblock. Doesn't do any error checking */
void pa_make_nonblock_fd(int fd) {
#ifdef O_NONBLOCK
int v;
assert(fd >= 0);
if ((v = fcntl(fd, F_GETFL)) >= 0)
if (!(v & O_NONBLOCK))
fcntl(fd, F_SETFL, v|O_NONBLOCK);
#elif defined(OS_IS_WIN32)
u_long arg = 1;
if (ioctlsocket(fd, FIONBIO, &arg) < 0) {
if (WSAGetLastError() == WSAENOTSOCK)
pa_log_warn(__FILE__": WARNING: Only sockets can be made non-blocking!");
}
#else
pa_log_warn(__FILE__": WARNING: Non-blocking I/O not supported.!");
#endif
}
/** Creates a directory securely */
int pa_make_secure_dir(const char* dir) {
struct stat st;
assert(dir);
#ifdef OS_IS_WIN32
if (mkdir(dir) < 0)
#else
if (mkdir(dir, 0700) < 0)
#endif
if (errno != EEXIST)
return -1;
#ifdef HAVE_CHOWN
chown(dir, getuid(), getgid());
#endif
#ifdef HAVE_CHMOD
chmod(dir, 0700);
#endif
#ifdef HAVE_LSTAT
if (lstat(dir, &st) < 0)
#else
if (stat(dir, &st) < 0)
#endif
goto fail;
#ifndef OS_IS_WIN32
if (!S_ISDIR(st.st_mode) || (st.st_uid != getuid()) || ((st.st_mode & 0777) != 0700))
goto fail;
#else
fprintf(stderr, "FIXME: pa_make_secure_dir()\n");
#endif
return 0;
fail:
rmdir(dir);
return -1;
}
/* Return a newly allocated sting containing the parent directory of the specified file */
char *pa_parent_dir(const char *fn) {
char *slash, *dir = pa_xstrdup(fn);
slash = (char*) pa_path_get_filename(dir);
if (slash == fn)
return NULL;
*(slash-1) = 0;
return dir;
}
/* Creates a the parent directory of the specified path securely */
int pa_make_secure_parent_dir(const char *fn) {
int ret = -1;
char *dir;
if (!(dir = pa_parent_dir(fn)))
goto finish;
if (pa_make_secure_dir(dir) < 0)
goto finish;
ret = 0;
finish:
pa_xfree(dir);
return ret;
}
/** Platform independent read function. Necessary since not all systems
* treat all file descriptors equal. */
ssize_t pa_read(int fd, void *buf, size_t count) {
ssize_t r;
#ifdef OS_IS_WIN32
r = recv(fd, buf, count, 0);
if (r < 0) {
if (WSAGetLastError() != WSAENOTSOCK) {
errno = WSAGetLastError();
return r;
}
}
if (r < 0)
#endif
r = read(fd, buf, count);
return r;
}
/** Similar to pa_read(), but handles writes */
ssize_t pa_write(int fd, const void *buf, size_t count) {
ssize_t r;
#ifdef OS_IS_WIN32
r = send(fd, buf, count, 0);
if (r < 0) {
if (WSAGetLastError() != WSAENOTSOCK) {
errno = WSAGetLastError();
return r;
}
}
if (r < 0)
#endif
r = write(fd, buf, count);
return r;
}
/** Calls read() in a loop. Makes sure that as much as 'size' bytes,
* unless EOF is reached or an error occured */
ssize_t pa_loop_read(int fd, void*data, size_t size) {
ssize_t ret = 0;
assert(fd >= 0 && data && size);
while (size > 0) {
ssize_t r;
if ((r = pa_read(fd, data, size)) < 0)
return r;
if (r == 0)
break;
ret += r;
data = (uint8_t*) data + r;
size -= r;
}
return ret;
}
/** Similar to pa_loop_read(), but wraps write() */
ssize_t pa_loop_write(int fd, const void*data, size_t size) {
ssize_t ret = 0;
assert(fd >= 0 && data && size);
while (size > 0) {
ssize_t r;
if ((r = pa_write(fd, data, size)) < 0)
return r;
if (r == 0)
break;
ret += r;
data = (const uint8_t*) data + r;
size -= r;
}
return ret;
}
/* Print a warning messages in case that the given signal is not
* blocked or trapped */
void pa_check_signal_is_blocked(int sig) {
#ifdef HAVE_SIGACTION
struct sigaction sa;
sigset_t set;
/* If POSIX threads are supported use thread-aware
* pthread_sigmask() function, to check if the signal is
* blocked. Otherwise fall back to sigprocmask() */
#ifdef HAVE_PTHREAD
if (pthread_sigmask(SIG_SETMASK, NULL, &set) < 0) {
#endif
if (sigprocmask(SIG_SETMASK, NULL, &set) < 0) {
pa_log(__FILE__": sigprocmask(): %s", pa_cstrerror(errno));
return;
}
#ifdef HAVE_PTHREAD
}
#endif
if (sigismember(&set, sig))
return;
/* Check whether the signal is trapped */
if (sigaction(sig, NULL, &sa) < 0) {
pa_log(__FILE__": sigaction(): %s", pa_cstrerror(errno));
return;
}
if (sa.sa_handler != SIG_DFL)
return;
pa_log(__FILE__": WARNING: %s is not trapped. This might cause malfunction!", pa_strsignal(sig));
#else /* HAVE_SIGACTION */
pa_log(__FILE__": WARNING: %s might not be trapped. This might cause malfunction!", pa_strsignal(sig));
#endif
}
/* The following function is based on an example from the GNU libc
* documentation. This function is similar to GNU's asprintf(). */
char *pa_sprintf_malloc(const char *format, ...) {
int size = 100;
char *c = NULL;
assert(format);
for(;;) {
int r;
va_list ap;
c = pa_xrealloc(c, size);
va_start(ap, format);
r = vsnprintf(c, size, format, ap);
va_end(ap);
if (r > -1 && r < size)
return c;
if (r > -1) /* glibc 2.1 */
size = r+1;
else /* glibc 2.0 */
size *= 2;
}
}
/* Same as the previous function, but use a va_list instead of an
* ellipsis */
char *pa_vsprintf_malloc(const char *format, va_list ap) {
int size = 100;
char *c = NULL;
assert(format);
for(;;) {
int r;
c = pa_xrealloc(c, size);
r = vsnprintf(c, size, format, ap);
if (r > -1 && r < size)
return c;
if (r > -1) /* glibc 2.1 */
size = r+1;
else /* glibc 2.0 */
size *= 2;
}
}
/* Similar to OpenBSD's strlcpy() function */
char *pa_strlcpy(char *b, const char *s, size_t l) {
assert(b && s && l > 0);
strncpy(b, s, l);
b[l-1] = 0;
return b;
}
#define NICE_LEVEL (-15)
/* Raise the priority of the current process as much as possible and
sensible: set the nice level to -15 and enable realtime scheduling if
supported.*/
void pa_raise_priority(void) {
#ifdef HAVE_SYS_RESOURCE_H
if (setpriority(PRIO_PROCESS, 0, NICE_LEVEL) < 0)
pa_log_warn(__FILE__": setpriority(): %s", pa_cstrerror(errno));
else
pa_log_info(__FILE__": Successfully gained nice level %i.", NICE_LEVEL);
#endif
#ifdef _POSIX_PRIORITY_SCHEDULING
{
struct sched_param sp;
if (sched_getparam(0, &sp) < 0) {
pa_log(__FILE__": sched_getparam(): %s", pa_cstrerror(errno));
return;
}
sp.sched_priority = 1;
if (sched_setscheduler(0, SCHED_FIFO, &sp) < 0) {
pa_log_warn(__FILE__": sched_setscheduler(): %s", pa_cstrerror(errno));
return;
}
pa_log_info(__FILE__": Successfully enabled SCHED_FIFO scheduling.");
}
#endif
#ifdef OS_IS_WIN32
if (!SetPriorityClass(GetCurrentProcess(), HIGH_PRIORITY_CLASS))
pa_log_warn(__FILE__": SetPriorityClass() failed: 0x%08X", GetLastError());
else
pa_log_info(__FILE__": Successfully gained high priority class.");
#endif
}
/* Reset the priority to normal, inverting the changes made by pa_raise_priority() */
void pa_reset_priority(void) {
#ifdef OS_IS_WIN32
SetPriorityClass(GetCurrentProcess(), NORMAL_PRIORITY_CLASS);
#endif
#ifdef _POSIX_PRIORITY_SCHEDULING
{
struct sched_param sp;
sched_getparam(0, &sp);
sp.sched_priority = 0;
sched_setscheduler(0, SCHED_OTHER, &sp);
}
#endif
#ifdef HAVE_SYS_RESOURCE_H
setpriority(PRIO_PROCESS, 0, 0);
#endif
}
/* Set the FD_CLOEXEC flag for a fd */
int pa_fd_set_cloexec(int fd, int b) {
#ifdef FD_CLOEXEC
int v;
assert(fd >= 0);
if ((v = fcntl(fd, F_GETFD, 0)) < 0)
return -1;
v = (v & ~FD_CLOEXEC) | (b ? FD_CLOEXEC : 0);
if (fcntl(fd, F_SETFD, v) < 0)
return -1;
#endif
return 0;
}
/* Try to parse a boolean string value.*/
int pa_parse_boolean(const char *v) {
if (!strcmp(v, "1") || v[0] == 'y' || v[0] == 'Y' || v[0] == 't' || v[0] == 'T' || !strcasecmp(v, "on"))
return 1;
else if (!strcmp(v, "0") || v[0] == 'n' || v[0] == 'N' || v[0] == 'f' || v[0] == 'F' || !strcasecmp(v, "off"))
return 0;
return -1;
}
/* Split the specified string wherever one of the strings in delimiter
* occurs. Each time it is called returns a newly allocated string
* with pa_xmalloc(). The variable state points to, should be
* initiallized to NULL before the first call. */
char *pa_split(const char *c, const char *delimiter, const char**state) {
const char *current = *state ? *state : c;
size_t l;
if (!*current)
return NULL;
l = strcspn(current, delimiter);
*state = current+l;
if (**state)
(*state)++;
return pa_xstrndup(current, l);
}
/* What is interpreted as whitespace? */
#define WHITESPACE " \t\n"
/* Split a string into words. Otherwise similar to pa_split(). */
char *pa_split_spaces(const char *c, const char **state) {
const char *current = *state ? *state : c;
size_t l;
if (!*current || *c == 0)
return NULL;
current += strspn(current, WHITESPACE);
l = strcspn(current, WHITESPACE);
*state = current+l;
return pa_xstrndup(current, l);
}
/* Return the name of an UNIX signal. Similar to GNU's strsignal() */
const char *pa_strsignal(int sig) {
switch(sig) {
case SIGINT: return "SIGINT";
case SIGTERM: return "SIGTERM";
#ifdef SIGUSR1
case SIGUSR1: return "SIGUSR1";
#endif
#ifdef SIGUSR2
case SIGUSR2: return "SIGUSR2";
#endif
#ifdef SIGXCPU
case SIGXCPU: return "SIGXCPU";
#endif
#ifdef SIGPIPE
case SIGPIPE: return "SIGPIPE";
#endif
#ifdef SIGCHLD
case SIGCHLD: return "SIGCHLD";
#endif
#ifdef SIGHUP
case SIGHUP: return "SIGHUP";
#endif
default: return "UNKNOWN SIGNAL";
}
}
#ifdef HAVE_GRP_H
/* Check whether the specified GID and the group name match */
static int is_group(gid_t gid, const char *name) {
struct group group, *result = NULL;
long n;
void *data;
int r = -1;
#ifdef HAVE_GETGRGID_R
#ifdef _SC_GETGR_R_SIZE_MAX
n = sysconf(_SC_GETGR_R_SIZE_MAX);
#else
n = -1;
#endif
if (n < 0) n = 512;
data = pa_xmalloc(n);
if (getgrgid_r(gid, &group, data, n, &result) < 0 || !result) {
pa_log(__FILE__": getgrgid_r(%u): %s", (unsigned)gid, pa_cstrerror(errno));
goto finish;
}
r = strcmp(name, result->gr_name) == 0;
finish:
pa_xfree(data);
#else
/* XXX Not thread-safe, but needed on OSes (e.g. FreeBSD 4.X) that do not
* support getgrgid_r. */
if ((result = getgrgid(gid)) == NULL) {
pa_log(__FILE__": getgrgid(%u): %s", gid, pa_cstrerror(errno));
goto finish;
}
r = strcmp(name, result->gr_name) == 0;
finish:
#endif
return r;
}
/* Check the current user is member of the specified group */
int pa_own_uid_in_group(const char *name, gid_t *gid) {
GETGROUPS_T *gids, tgid;
int n = sysconf(_SC_NGROUPS_MAX);
int r = -1, i;
assert(n > 0);
gids = pa_xmalloc(sizeof(GETGROUPS_T)*n);
if ((n = getgroups(n, gids)) < 0) {
pa_log(__FILE__": getgroups(): %s", pa_cstrerror(errno));
goto finish;
}
for (i = 0; i < n; i++) {
if (is_group(gids[i], name) > 0) {
*gid = gids[i];
r = 1;
goto finish;
}
}
if (is_group(tgid = getgid(), name) > 0) {
*gid = tgid;
r = 1;
goto finish;
}
r = 0;
finish:
pa_xfree(gids);
return r;
}
int pa_uid_in_group(uid_t uid, const char *name) {
char *g_buf, *p_buf;
long g_n, p_n;
struct group grbuf, *gr;
char **i;
int r = -1;
g_n = sysconf(_SC_GETGR_R_SIZE_MAX);
g_buf = pa_xmalloc(g_n);
p_n = sysconf(_SC_GETPW_R_SIZE_MAX);
p_buf = pa_xmalloc(p_n);
if (getgrnam_r(name, &grbuf, g_buf, (size_t) g_n, &gr) != 0 || !gr)
goto finish;
r = 0;
for (i = gr->gr_mem; *i; i++) {
struct passwd pwbuf, *pw;
if (getpwnam_r(*i, &pwbuf, p_buf, (size_t) p_n, &pw) != 0 || !pw)
continue;
if (pw->pw_uid == uid) {
r = 1;
break;
}
}
finish:
pa_xfree(g_buf);
pa_xfree(p_buf);
return r;
}
#else /* HAVE_GRP_H */
int pa_own_uid_in_group(const char *name, gid_t *gid) {
return -1;
}
int pa_uid_in_group(uid_t uid, const char *name) {
return -1;
}
#endif
/* Lock or unlock a file entirely.
(advisory on UNIX, mandatory on Windows) */
int pa_lock_fd(int fd, int b) {
#ifdef F_SETLKW
struct flock flock;
/* Try a R/W lock first */
flock.l_type = b ? F_WRLCK : F_UNLCK;
flock.l_whence = SEEK_SET;
flock.l_start = 0;
flock.l_len = 0;
if (fcntl(fd, F_SETLKW, &flock) >= 0)
return 0;
/* Perhaps the file descriptor qas opened for read only, than try again with a read lock. */
if (b && errno == EBADF) {
flock.l_type = F_RDLCK;
if (fcntl(fd, F_SETLKW, &flock) >= 0)
return 0;
}
pa_log(__FILE__": %slock: %s", !b? "un" : "",
pa_cstrerror(errno));
#endif
#ifdef OS_IS_WIN32
HANDLE h = (HANDLE)_get_osfhandle(fd);
if (b && LockFile(h, 0, 0, 0xFFFFFFFF, 0xFFFFFFFF))
return 0;
if (!b && UnlockFile(h, 0, 0, 0xFFFFFFFF, 0xFFFFFFFF))
return 0;
pa_log(__FILE__": %slock failed: 0x%08X", !b ? "un" : "", GetLastError());
#endif
return -1;
}
/* Remove trailing newlines from a string */
char* pa_strip_nl(char *s) {
assert(s);
s[strcspn(s, "\r\n")] = 0;
return s;
}
/* Create a temporary lock file and lock it. */
int pa_lock_lockfile(const char *fn) {
int fd = -1;
assert(fn);
for (;;) {
struct stat st;
if ((fd = open(fn, O_CREAT|O_RDWR, S_IRUSR|S_IWUSR)) < 0) {
pa_log(__FILE__": failed to create lock file '%s': %s", fn,
pa_cstrerror(errno));
goto fail;
}
if (pa_lock_fd(fd, 1) < 0) {
pa_log(__FILE__": failed to lock file '%s'.", fn);
goto fail;
}
if (fstat(fd, &st) < 0) {
pa_log(__FILE__": failed to fstat() file '%s'.", fn);
goto fail;
}
/* Check wheter the file has been removed meanwhile. When yes, restart this loop, otherwise, we're done */
if (st.st_nlink >= 1)
break;
if (pa_lock_fd(fd, 0) < 0) {
pa_log(__FILE__": failed to unlock file '%s'.", fn);
goto fail;
}
if (close(fd) < 0) {
pa_log(__FILE__": failed to close file '%s'.", fn);
goto fail;
}
fd = -1;
}
return fd;
fail:
if (fd >= 0)
close(fd);
return -1;
}
/* Unlock a temporary lcok file */
int pa_unlock_lockfile(const char *fn, int fd) {
int r = 0;
assert(fn && fd >= 0);
if (unlink(fn) < 0) {
pa_log_warn(__FILE__": WARNING: unable to remove lock file '%s': %s",
fn, pa_cstrerror(errno));
r = -1;
}
if (pa_lock_fd(fd, 0) < 0) {
pa_log_warn(__FILE__": WARNING: failed to unlock file '%s'.", fn);
r = -1;
}
if (close(fd) < 0) {
pa_log_warn(__FILE__": WARNING: failed to close lock file '%s': %s",
fn, pa_cstrerror(errno));
r = -1;
}
return r;
}
/* 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) {
const char *fn;
char h[PATH_MAX];
#ifdef OS_IS_WIN32
char buf[PATH_MAX];
if (!getenv(POLYP_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 (result)
*result = pa_xstrdup(fn);
return fopen(fn, mode);
}
if (local && pa_get_home_dir(h, sizeof(h))) {
FILE *f;
char *lfn;
fn = lfn = pa_sprintf_malloc("%s/%s", h, local);
#ifdef OS_IS_WIN32
if (!ExpandEnvironmentStrings(lfn, buf, PATH_MAX))
return NULL;
fn = buf;
#endif
f = fopen(fn, mode);
if (f || errno != ENOENT) {
if (result)
*result = pa_xstrdup(fn);
pa_xfree(lfn);
return f;
}
pa_xfree(lfn);
}
if (!global) {
if (result)
*result = NULL;
errno = ENOENT;
return NULL;
}
#ifdef OS_IS_WIN32
if (!ExpandEnvironmentStrings(global, buf, PATH_MAX))
return NULL;
global = buf;
#endif
if (result)
*result = pa_xstrdup(global);
return fopen(global, mode);
}
/* Format the specified data as a hexademical string */
char *pa_hexstr(const uint8_t* d, size_t dlength, char *s, size_t slength) {
size_t i = 0, j = 0;
const char hex[] = "0123456789abcdef";
assert(d && s && slength > 0);
while (i < dlength && j+3 <= slength) {
s[j++] = hex[*d >> 4];
s[j++] = hex[*d & 0xF];
d++;
i++;
}
s[j < slength ? j : slength] = 0;
return s;
}
/* Convert a hexadecimal digit to a number or -1 if invalid */
static int hexc(char c) {
if (c >= '0' && c <= '9')
return c - '0';
if (c >= 'A' && c <= 'F')
return c - 'A' + 10;
if (c >= 'a' && c <= 'f')
return c - 'a' + 10;
return -1;
}
/* Parse a hexadecimal string as created by pa_hexstr() to a BLOB */
size_t pa_parsehex(const char *p, uint8_t *d, size_t dlength) {
size_t j = 0;
assert(p && d);
while (j < dlength && *p) {
int b;
if ((b = hexc(*(p++))) < 0)
return (size_t) -1;
d[j] = (uint8_t) (b << 4);
if (!*p)
return (size_t) -1;
if ((b = hexc(*(p++))) < 0)
return (size_t) -1;
d[j] |= (uint8_t) b;
j++;
}
return j;
}
/* Returns nonzero when *s starts with *pfx */
int pa_startswith(const char *s, const char *pfx) {
size_t l;
assert(s);
assert(pfx);
l = strlen(pfx);
return strlen(s) >= l && strncmp(s, pfx, l) == 0;
}
/* Returns nonzero when *s ends with *sfx */
int pa_endswith(const char *s, const char *sfx) {
size_t l1, l2;
assert(s);
assert(sfx);
l1 = strlen(s);
l2 = strlen(sfx);
return l1 >= l2 && strcmp(s+l1-l2, sfx) == 0;
}
/* if fn is null return the polypaudio run time path in s (/tmp/polypaudio)
* 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) {
char u[256];
#ifndef OS_IS_WIN32
if (fn && *fn == '/')
#else
if (fn && strlen(fn) >= 3 && isalpha(fn[0]) && fn[1] == ':' && fn[2] == '\\')
#endif
return pa_strlcpy(s, fn, l);
if (fn)
snprintf(s, l, "%s%s%c%s", PA_RUNTIME_PATH_PREFIX, pa_get_user_name(u, sizeof(u)), PATH_SEP, fn);
else
snprintf(s, l, "%s%s", PA_RUNTIME_PATH_PREFIX, pa_get_user_name(u, sizeof(u)));
#ifdef OS_IS_WIN32
{
char buf[l];
strcpy(buf, s);
ExpandEnvironmentStrings(buf, s, l);
}
#endif
return s;
}
/* Convert the string s to a signed integer in *ret_i */
int pa_atoi(const char *s, int32_t *ret_i) {
char *x = NULL;
long l;
assert(s && ret_i);
l = strtol(s, &x, 0);
if (!x || *x)
return -1;
*ret_i = (int32_t) l;
return 0;
}
/* Convert the string s to an unsigned integer in *ret_u */
int pa_atou(const char *s, uint32_t *ret_u) {
char *x = NULL;
unsigned long l;
assert(s && ret_u);
l = strtoul(s, &x, 0);
if (!x || *x)
return -1;
*ret_u = (uint32_t) l;
return 0;
}
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