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util/proc: theoretical underflow

This commit is contained in:
Hiltjo Posthuma 2014-07-05 12:51:13 +00:00 committed by sin
parent 5a06a9f7e1
commit 2557104494
1 changed files with 5 additions and 2 deletions
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7
util/proc.c
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@ -43,6 +43,7 @@ parsestat(pid_t pid, struct procstat *ps)
{
char path[PATH_MAX];
FILE *fp;
size_t len;
snprintf(path, sizeof(path), "/proc/%d/stat", pid);
if (!(fp = fopen(path, "r")))
@ -58,8 +59,10 @@ parsestat(pid_t pid, struct procstat *ps)
&ps->num_threads, &ps->itrealvalue, &ps->starttime,
&ps->vsize, &ps->rss, &ps->rsslim);
/* Filter out '(' and ')' from comm */
ps->comm[strlen(ps->comm) - 1] = '\0';
memmove(ps->comm, ps->comm + 1, strlen(ps->comm));
if((len = strlen(ps->comm)) > 0)
len--;
ps->comm[len] = '\0';
memmove(ps->comm, ps->comm + 1, len);
fclose(fp);
return 0;
}