Strip all non-digit characters from pidbuf

[i3/i3status] / wmiistatus.c

diff --git a/wmiistatus.c b/wmiistatus.c
index 00aa487aab8390490a956d06dd36c54caef64443..bdb1e6a5ed8bbcc795b1815cec8f5c9ac2017711 100644 (file)
--- a/wmiistatus.c
+++ b/wmiistatus.c
@@ -246,7 +246,9 @@ static char *get_eth_info() {
  */
 static bool process_runs(const char *path) {
        char pidbuf[512],
-            procbuf[512];
+            procbuf[512],
+            *walk;
+       int n;
        static glob_t globbuf;
        struct stat statbuf;
 
@@ -257,8 +259,15 @@ static bool process_runs(const char *path) {
        globfree(&globbuf);
        if (fd < 0)
                return false;
-       read(fd, pidbuf, sizeof(pidbuf));
+       n = read(fd, pidbuf, sizeof(pidbuf));
+       if (n > 0)
+               pidbuf[n] = '\0';
        close(fd);
+       for (walk = pidbuf; *walk != '\0'; walk++)
+               if (!isdigit((int)(*walk))) {
+                       *walk = '\0';
+                       break;
+               }
        sprintf(procbuf, "/proc/%s", pidbuf);
        return (stat(procbuf, &statbuf) >= 0);
 }