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Mixer load: don't upload empty mixers from non-existing files

This commit is contained in:
Julian Oes 2014-02-05 21:19:25 +01:00
parent 8a48a4916c
commit 3392086f8f
2 changed files with 6 additions and 3 deletions
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6
src/modules/systemlib/mixer/mixer_load.c
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@ -52,7 +52,8 @@ int load_mixer_file(const char *fname, char *buf, unsigned maxlen)
/* open the mixer definition file */
fp = fopen(fname, "r");
if (fp == NULL) {
return 1;
warnx("file not found");
return -1;
}
/* read valid lines from the file into a buffer */
@ -88,7 +89,8 @@ int load_mixer_file(const char *fname, char *buf, unsigned maxlen)
/* if the line is too long to fit in the buffer, bail */
if ((strlen(line) + strlen(buf) + 1) >= maxlen) {
return 1;
warnx("line too long");
return -1;
}
/* add the line to the buffer */

3
src/systemcmds/mixer/mixer.cpp
View File

@ -102,7 +102,8 @@ load(const char *devname, const char *fname)
if (ioctl(dev, MIXERIOCRESET, 0))
err(1, "can't reset mixers on %s", devname);
load_mixer_file(fname, &buf[0], sizeof(buf));
if (load_mixer_file(fname, &buf[0], sizeof(buf)) < 0)
err(1, "can't load mixer: %s", fname);
/* XXX pass the buffer to the device */
int ret = ioctl(dev, MIXERIOCLOADBUF, (unsigned long)buf);