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arecord: Remove only regular files

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arecord removes a file before writing into it. It's not
appropriate in some cases. For example, if you a pass
a symlink to a file, then the symlink will be removed
while the user expects to record into the symlink's target.
Another case is recording into the device file. Some
modems provide a tty device file as a voice device.
And it's not possible to write into it under root with
arecord, because it removes the device file.

So check the type of a file before writing into it and
remove only regular files.

Signed-off-by: Alexander Volkov <a.volkov@rusbitech.ru>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Alexander Volkov 2015-09-21 16:05:57 +03:00 committed by Takashi Iwai
parent 4482cc7cfe
commit 5f0fc49a3a
1 changed files with 5 additions and 1 deletions
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6
aplay/aplay.c
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@ -2929,6 +2929,7 @@ static void capture(char *orig_name)
char *name = orig_name; /* current filename */
char namebuf[PATH_MAX+1];
off64_t count, rest; /* number of bytes to capture */
struct stat statbuf;
/* get number of bytes to capture */
count = calc_count();
@ -2973,7 +2974,10 @@ static void capture(char *orig_name)
}
/* open a new file */
remove(name);
if (!lstat(name, &statbuf)) {
if (S_ISREG(statbuf.st_mode))
remove(name);
}
fd = safe_open(name);
if (fd < 0) {
perror(name);