diff options
| -rw-r--r-- | src/utils/padsp.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/src/utils/padsp.c b/src/utils/padsp.c index b9c26f09..9a2bad44 100644 --- a/src/utils/padsp.c +++ b/src/utils/padsp.c @@ -116,9 +116,17 @@ static int (*_ioctl)(int, int, void*) = NULL; static int (*_close)(int) = NULL; static int (*_open)(const char *, int, mode_t) = NULL; static FILE* (*_fopen)(const char *path, const char *mode) = NULL; +static int (*_stat)(const char *, struct stat *) = NULL; +#ifdef _STAT_VER +static int (*___xstat)(int, const char *, struct stat *) = NULL; +#endif #ifdef HAVE_OPEN64 static int (*_open64)(const char *, int, mode_t) = NULL; static FILE* (*_fopen64)(const char *path, const char *mode) = NULL; +static int (*_stat64)(const char *, struct stat64 *) = NULL; +#ifdef _STAT_VER +static int (*___xstat64)(int, const char *, struct stat64 *) = NULL; +#endif #endif static int (*_fclose)(FILE *f) = NULL; static int (*_access)(const char *, int) = NULL; @@ -170,6 +178,38 @@ do { \ pthread_mutex_unlock(&func_mutex); \ } while(0) +#define LOAD_STAT_FUNC() \ +do { \ + pthread_mutex_lock(&func_mutex); \ + if (!_stat) \ + _stat = (int (*)(const char *, struct stat *)) dlsym_fn(RTLD_NEXT, "stat"); \ + pthread_mutex_unlock(&func_mutex); \ +} while(0) + +#define LOAD_STAT64_FUNC() \ +do { \ + pthread_mutex_lock(&func_mutex); \ + if (!_stat64) \ + _stat64 = (int (*)(const char *, struct stat64 *)) dlsym_fn(RTLD_NEXT, "stat64"); \ + pthread_mutex_unlock(&func_mutex); \ +} while(0) + +#define LOAD_XSTAT_FUNC() \ +do { \ + pthread_mutex_lock(&func_mutex); \ + if (!___xstat) \ + ___xstat = (int (*)(int, const char *, struct stat *)) dlsym_fn(RTLD_NEXT, "__xstat"); \ + pthread_mutex_unlock(&func_mutex); \ +} while(0) + +#define LOAD_XSTAT64_FUNC() \ +do { \ + pthread_mutex_lock(&func_mutex); \ + if (!___xstat64) \ + ___xstat64 = (int (*)(int, const char *, struct stat64 *)) dlsym_fn(RTLD_NEXT, "__xstat64"); \ + pthread_mutex_unlock(&func_mutex); \ +} while(0) + #define LOAD_FOPEN_FUNC() \ do { \ pthread_mutex_lock(&func_mutex); \ @@ -2348,7 +2388,107 @@ int access(const char *pathname, int mode) { return 0; } +int stat(const char *pathname, struct stat *buf) { #ifdef HAVE_OPEN64 + struct stat64 parent; +#else + struct stat parent; +#endif + int ret; + + if (!pathname || !buf) { + errno = EFAULT; + return -1; + } + + if (strcmp(pathname, "/dev/dsp") != 0 && + strcmp(pathname, "/dev/adsp") != 0 && + strcmp(pathname, "/dev/sndstat") != 0 && + strcmp(pathname, "/dev/mixer") != 0) { + debug(DEBUG_LEVEL_VERBOSE, __FILE__": stat(%s)\n", pathname); + LOAD_STAT_FUNC(); + return _stat(pathname, buf); + } + + debug(DEBUG_LEVEL_NORMAL, __FILE__": stat(%s)\n", pathname); + +#ifdef _STAT_VER +#ifdef HAVE_OPEN64 + ret = __xstat64(_STAT_VER, "/dev", &parent); +#else + ret = __xstat(_STAT_VER, "/dev", &parent); +#endif +#else +#ifdef HAVE_OPEN64 + ret = stat64("/dev", &parent); +#else + ret = stat("/dev", &parent); +#endif +#endif + + if (ret) { + debug(DEBUG_LEVEL_NORMAL, __FILE__": unable to stat \"/dev\"\n"); + return -1; + } + + buf->st_dev = parent.st_dev; + buf->st_ino = 0xDEADBEEF; /* FIXME: Can we do this in a safe way? */ + buf->st_mode = S_IFCHR | S_IRUSR | S_IWUSR; + buf->st_nlink = 1; + buf->st_uid = getuid(); + buf->st_gid = getgid(); + buf->st_rdev = 0x0E03; /* FIXME: Linux specific */ + buf->st_size = 0; + buf->st_atime = 1181557705; + buf->st_mtime = 1181557705; + buf->st_ctime = 1181557705; + buf->st_blksize = 1; + buf->st_blocks = 0; + + return 0; +} + +#ifdef HAVE_OPEN64 + +int stat64(const char *pathname, struct stat64 *buf) { + struct stat oldbuf; + int ret; + + if (!pathname || !buf) { + errno = EFAULT; + return -1; + } + + debug(DEBUG_LEVEL_VERBOSE, __FILE__": stat64(%s)\n", pathname); + + if (strcmp(pathname, "/dev/dsp") != 0 && + strcmp(pathname, "/dev/adsp") != 0 && + strcmp(pathname, "/dev/sndstat") != 0 && + strcmp(pathname, "/dev/mixer") != 0) { + LOAD_STAT64_FUNC(); + return _stat64(pathname, buf); + } + + ret = stat(pathname, &oldbuf); + if (ret) + return ret; + + buf->st_dev = oldbuf.st_dev; + buf->st_ino = oldbuf.st_ino; + buf->st_mode = oldbuf.st_mode; + buf->st_nlink = oldbuf.st_nlink; + buf->st_uid = oldbuf.st_uid; + buf->st_gid = oldbuf.st_gid; + buf->st_rdev = oldbuf.st_rdev; + buf->st_size = oldbuf.st_size; + buf->st_atime = oldbuf.st_atime; + buf->st_mtime = oldbuf.st_mtime; + buf->st_ctime = oldbuf.st_ctime; + buf->st_blksize = oldbuf.st_blksize; + buf->st_blocks = oldbuf.st_blocks; + + return 0; +} int open64(const char *filename, int flags, ...) { va_list args; @@ -2374,6 +2514,62 @@ int open64(const char *filename, int flags, ...) { #endif +#ifdef _STAT_VER + +int __xstat(int ver, const char *pathname, struct stat *buf) { + if (!pathname || !buf) { + errno = EFAULT; + return -1; + } + + debug(DEBUG_LEVEL_VERBOSE, __FILE__": __xstat(%s)\n", pathname); + + if (strcmp(pathname, "/dev/dsp") != 0 && + strcmp(pathname, "/dev/adsp") != 0 && + strcmp(pathname, "/dev/sndstat") != 0 && + strcmp(pathname, "/dev/mixer") != 0) { + LOAD_XSTAT_FUNC(); + return ___xstat(ver, pathname, buf); + } + + if (ver != _STAT_VER) { + errno = EINVAL; + return -1; + } + + return stat(pathname, buf); +} + +#ifdef HAVE_OPEN64 + +int __xstat64(int ver, const char *pathname, struct stat64 *buf) { + if (!pathname || !buf) { + errno = EFAULT; + return -1; + } + + debug(DEBUG_LEVEL_VERBOSE, __FILE__": __xstat64(%s)\n", pathname); + + if (strcmp(pathname, "/dev/dsp") != 0 && + strcmp(pathname, "/dev/adsp") != 0 && + strcmp(pathname, "/dev/sndstat") != 0 && + strcmp(pathname, "/dev/mixer") != 0) { + LOAD_XSTAT64_FUNC(); + return ___xstat64(ver, pathname, buf); + } + + if (ver != _STAT_VER) { + errno = EINVAL; + return -1; + } + + return stat64(pathname, buf); +} + +#endif + +#endif + FILE* fopen(const char *filename, const char *mode) { FILE *f = NULL; int fd; |