Add perm option

Added "perm" option to file plugin to specify the file permission.
Changed the default permission to 0600.

diff --git a/src/pcm/pcm_file.c b/src/pcm/pcm_file.c
index 593a93d603277414da500c4ab97fa071aa84252c..acd1d2ca8350f27fac8d3b252ba0a7f18c9e30bd 100644 (file)
--- a/src/pcm/pcm_file.c
+++ b/src/pcm/pcm_file.c
@@ -394,7 +394,7 @@ static snd_pcm_fast_ops_t snd_pcm_file_fast_ops = {
  *          changed in future.
  */
 int snd_pcm_file_open(snd_pcm_t **pcmp, const char *name,
-                     const char *fname, int fd, const char *fmt,
+                     const char *fname, int fd, const char *fmt, int perm,
                      snd_pcm_t *slave, int close_slave)
 {
        snd_pcm_t *pcm;
@@ -410,7 +410,7 @@ int snd_pcm_file_open(snd_pcm_t **pcmp, const char *name,
                return -EINVAL;
        }
        if (fname) {
-               fd = open(fname, O_WRONLY|O_CREAT, 0666);
+               fd = open(fname, O_WRONLY|O_CREAT, perm);
                if (fd < 0) {
                        SYSERR("open %s failed", fname);
                        return -errno;
@@ -470,6 +470,7 @@ pcm.name {
        or
        file INT                # File descriptor number
        [format STR]            # File format (only "raw" at the moment)
+       [perm INT]              # File permission (octal, default 0600)
 }
 \endcode
 
@@ -506,6 +507,7 @@ int _snd_pcm_file_open(snd_pcm_t **pcmp, const char *name,
        const char *fname = NULL;
        const char *format = NULL;
        long fd = -1;
+       int perm = 0600;
        snd_config_for_each(i, next, conf) {
                snd_config_t *n = snd_config_iterator_entry(i);
                const char *id;
@@ -536,6 +538,21 @@ int _snd_pcm_file_open(snd_pcm_t **pcmp, const char *name,
                        }
                        continue;
                }
+               if (strcmp(id, "perm") == 0) {
+                       char *perm;
+                       char *endp;
+                       err = snd_config_get_ascii(n, &perm);
+                       if (err < 0) {
+                               SNDERR("The field perm must be a valid file permission");
+                               return err;
+                       }
+                       if (isdigit(*perm) == 0) {
+                               SNDERR("The field perm must be a valid file permission");
+                               return -EINVAL;
+                       }
+                       perm = strtol(perm, &endp, 8);
+                       continue;
+               }
                SNDERR("Unknown field %s", id);
                return -EINVAL;
        }
@@ -555,7 +572,7 @@ int _snd_pcm_file_open(snd_pcm_t **pcmp, const char *name,
        snd_config_delete(sconf);
        if (err < 0)
                return err;
-       err = snd_pcm_file_open(pcmp, name, fname, fd, format, spcm, 1);
+       err = snd_pcm_file_open(pcmp, name, fname, fd, format, perm, spcm, 1);
        if (err < 0)
                snd_pcm_close(spcm);
        return err;