diff options
Diffstat (limited to 'mm_sound_focus_private.c')
| -rw-r--r-- | mm_sound_focus_private.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/mm_sound_focus_private.c b/mm_sound_focus_private.c index 98b06a7..b087839 100644 --- a/mm_sound_focus_private.c +++ b/mm_sound_focus_private.c @@ -28,6 +28,7 @@ #include <fcntl.h> #include <sys/stat.h> #include <unistd.h> +#include <stdlib.h> #include <mm_debug.h> #include <mm_error.h> @@ -35,6 +36,32 @@ focus_sound_info_t g_focus_sound_handle[FOCUS_HANDLE_MAX]; +static void unlink_if_symbolic_link(const char *path) +{ + int ret = 0; + char *resolved_path = NULL; + + if (path == NULL) + return; + + /* return if it does not exist */ + if ((ret = access(path, F_OK))) + return; + + if ((resolved_path = realpath(path, NULL))) { + /* assume that the path paramether is an absolute path */ + if (strcmp(path, resolved_path)) { + debug_warning("unexpected symbolic link!, unlink the symbolic link(%s) to the resolved path(%s)", path, resolved_path); + unlink(path); + } + free(resolved_path); + } else { + char str_error[256]; + strerror_r(errno, str_error, sizeof(str_error)); + debug_warning("failed to realpath() for path:%s, err:%s", path, str_error); + } +} + static gpointer _focus_thread_func(gpointer data) { unsigned int thread_id = (unsigned int)pthread_self(); @@ -137,6 +164,8 @@ static gboolean _focus_callback_handler(gpointer user_data) int tmpfd = -1; unsigned int buf = 0; char *filename2 = g_strdup_printf("/tmp/FOCUS.%d.%dr", focus_handle->focus_pid, cb_data.handle); + + unlink_if_symbolic_link(filename2); tmpfd = open(filename2, O_WRONLY | O_NONBLOCK); if (tmpfd < 0) { char str_error[256]; @@ -224,6 +253,8 @@ SKIP_CB_AND_RET: int tmpfd = -1; int buf = -1; char *filename2 = g_strdup_printf("/tmp/FOCUS.%d.%d.wchr", focus_handle->focus_pid, cb_data.handle); + + unlink_if_symbolic_link(filename2); tmpfd = open(filename2, O_WRONLY | O_NONBLOCK); if (tmpfd < 0) { char str_error[256]; @@ -296,6 +327,7 @@ static void _focus_open_callback(int index, bool is_for_watching) g_focus_sound_handle[index].focus_pid, g_focus_sound_handle[index].handle); } + unlink_if_symbolic_link(filename); pre_mask = umask(0); if (mknod(filename, S_IFIFO|0666, 0)) debug_error("mknod() failure, errno(%d)", errno); |