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Rework parsecmdline()

This commit is contained in:
sin 2014-08-20 20:37:12 +01:00
parent 0fbd4280f8
commit cd1a3d5698
1 changed files with 7 additions and 4 deletions
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11
util/proc.c
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@ -19,13 +19,16 @@ parsecmdline(pid_t pid, char *buf, size_t siz)
char path[PATH_MAX];
ssize_t n, i;
snprintf(path, sizeof(path), "/proc/%d/cmdline", pid);
snprintf(path, sizeof(path), "/proc/%ld/cmdline", (long)pid);
fd = open(path, O_RDONLY);
if (fd < 0)
return -1;
n = read(fd, buf, siz - 1);
if (n < 0)
eprintf("read %s:", path);
n = read(fd, buf, siz > 0 ? siz - 1 : 0);
if (n < 0) {
weprintf("read %s:", path);
close(fd);
return -1;
}
if (!n) {
close(fd);
return -1;