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padsp: Fix flush and improve error handling

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read() can return a number of bytes read less than k

in addition, handle EAGAIN and EOF

CID 1137981
This commit is contained in:
Peter Meerwald-Stadler 2016-08-17 23:52:17 +02:00
parent 114a429cf4
commit c99efbffd6
1 changed files with 9 additions and 2 deletions
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11
src/utils/padsp.c
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@ -1768,11 +1768,18 @@ static int dsp_flush_fd(int fd) {
while (l > 0) {
char buf[1024];
size_t k;
ssize_t r;
k = (size_t) l > sizeof(buf) ? sizeof(buf) : (size_t) l;
if (read(fd, buf, k) < 0)
r = read(fd, buf, k);
if (r < 0) {
if (errno == EAGAIN)
break;
debug(DEBUG_LEVEL_NORMAL, __FILE__": read(): %s\n", strerror(errno));
l -= k;
return -1;
} else if (r == 0)
break;
l -= r;
}
return 0;