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Simplify dmesg_show()

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The code was way too complicated.  We do not currently filter out
the priority level, so we default to raw output.
This commit is contained in:
sin 2014-06-30 16:43:25 +01:00
parent 5aede71236
commit 643a714256
1 changed files with 7 additions and 31 deletions
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38
dmesg.c
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@ -27,7 +27,6 @@ main(int argc, char *argv[])
int n;
char *buf;
int cflag = 0;
int rflag = 0;
long level;
ARGBEGIN {
@ -39,7 +38,6 @@ main(int argc, char *argv[])
cflag = 1;
break;
case 'r':
rflag = 1;
break;
case 'n':
level = estrtol(EARGF(usage()), 10);
@ -60,14 +58,9 @@ main(int argc, char *argv[])
if (n < 0)
eprintf("klogctl:");
if (rflag) {
if (write(STDOUT_FILENO, buf, n) != n)
eprintf("write:");
} else {
n = dmesg_show(STDOUT_FILENO, buf, n);
if (n < 0)
eprintf("dmesg_show:");
}
n = dmesg_show(STDOUT_FILENO, buf, n);
if (n < 0)
eprintf("dmesg_show:");
if (cflag && klogctl(SYSLOG_ACTION_CLEAR, NULL, 0) < 0)
eprintf("klogctl:");
@ -79,30 +72,13 @@ main(int argc, char *argv[])
static int
dmesg_show(int fd, const void *buf, size_t n)
{
int last = '\n';
char *newbuf, *q;
const char *p = buf;
ssize_t r;
size_t i;
newbuf = calloc(n, sizeof(char));
q = newbuf;
for (i = 0; i < n; ) {
if (last == '\n' && p[i] == '<') {
i += 2;
if (i + 1 < n && p[i + 1] == '>')
i++;
} else {
*q++ = p[i];
}
last = p[i++];
}
r = write(fd, newbuf, n);
free(newbuf);
if(r < 0 || (size_t)r != n)
r = write(fd, p, n);
if (r < 0 || (size_t)r != n)
return -1;
if (last != '\n')
if (write(fd, "\n", 1) != 1)
return -1;
if (p[n - 1] != '\n')
putchar('\n');
return 0;
}