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authorEric Andersen2001-03-17 00:05:42 +0000
committerEric Andersen2001-03-17 00:05:42 +0000
commit8a6dbf6709e032bd7e91fc2e12a8babab96c59c2 (patch)
treec6c558f245b95d9b080d9df6f33d85c3438b968f /libbb/find_pid_by_name.c
parente2a3cd15a859cd419a9920450b60453402f945ee (diff)
downloadbusybox-8a6dbf6709e032bd7e91fc2e12a8babab96c59c2.zip
busybox-8a6dbf6709e032bd7e91fc2e12a8babab96c59c2.tar.gz
Patch from Pierre PEIFFER <pierre.peiffer@sxb.bsf.alcatel.fr>
that copes with the fact that processes may have been swapped out.
Diffstat (limited to 'libbb/find_pid_by_name.c')
-rw-r--r--libbb/find_pid_by_name.c21
1 files changed, 14 insertions, 7 deletions
diff --git a/libbb/find_pid_by_name.c b/libbb/find_pid_by_name.c
index a22ee1f..ea1cba6 100644
--- a/libbb/find_pid_by_name.c
+++ b/libbb/find_pid_by_name.c
@@ -32,6 +32,8 @@
#include <stdlib.h>
#include "libbb.h"
+#define READ_BUF_SIZE 50
+
/* For Erik's nifty devps device driver */
#ifdef BB_FEATURE_USE_DEVPS_PATCH
@@ -131,22 +133,27 @@ extern pid_t* find_pid_by_name( char* pidName)
while ((next = readdir(dir)) != NULL) {
FILE *status;
- char filename[256];
- char buffer[256];
+ char filename[READ_BUF_SIZE];
+ char buffer[READ_BUF_SIZE];
+ char name[READ_BUF_SIZE];
/* If it isn't a number, we don't want it */
if (!isdigit(*next->d_name))
continue;
- sprintf(filename, "/proc/%s/cmdline", next->d_name);
- status = fopen(filename, "r");
- if (!status) {
+ sprintf(filename, "/proc/%s/status", next->d_name);
+ if (! (status = fopen(filename, "r")) ) {
+ continue;
+ }
+ if (fgets(buffer, READ_BUF_SIZE-1, status) == NULL) {
+ fclose(status);
continue;
}
- fgets(buffer, 256, status);
fclose(status);
- if (strstr(get_last_path_component(buffer), pidName) != NULL) {
+ /* Buffer should contain a string like "Name: binary_name" */
+ sscanf(buffer, "%*s %s", name);
+ if (strcmp(name, pidName) == 0) {
pidList=xrealloc( pidList, sizeof(pid_t) * (i+2));
pidList[i++]=strtol(next->d_name, NULL, 0);
}