lsof: Print process user name.
Change-Id: I6e96faba894ad8c2eeb06e514d332c8ab2ec52f0
diff --git a/toolbox/lsof.c b/toolbox/lsof.c
index c55384b..4e2f77a 100644
--- a/toolbox/lsof.c
+++ b/toolbox/lsof.c
@@ -37,11 +37,16 @@
#include <stdlib.h>
#include <unistd.h>
+#include <pwd.h>
+#include <sys/stat.h>
+
#define BUF_MAX 1024
-#define CMD_DISPLAY_MAX 10
+#define CMD_DISPLAY_MAX (9 + 1)
+#define USER_DISPLAY_MAX (10 + 1)
struct pid_info_t {
pid_t pid;
+ char user[USER_DISPLAY_MAX];
char cmdline[CMD_DISPLAY_MAX];
@@ -82,7 +87,8 @@
if (!strcmp(link_dest, "/"))
goto out;
- printf("%-9s %5d %10s %4s %9s %18s %9s %10s %s\n", info->cmdline, info->pid, "???", type,
+ printf("%-9s %5d %10s %4s %9s %18s %9s %10s %s\n",
+ info->cmdline, info->pid, info->user, type,
"???", "???", "???", "???", link_dest);
out:
@@ -113,7 +119,8 @@
if (inode == 0 || !strcmp(device, "00:00"))
continue;
- printf("%-9s %5d %10s %4s %9s %18s %9zd %10ld %s\n", info->cmdline, info->pid, "???", "mem",
+ printf("%-9s %5d %10s %4s %9s %18s %9zd %10ld %s\n",
+ info->cmdline, info->pid, info->user, "mem",
"???", device, offset, inode, file);
}
@@ -136,7 +143,8 @@
if (dir == NULL) {
char msg[BUF_MAX];
snprintf(msg, sizeof(msg), "%s (opendir: %s)", info->path, strerror(errno));
- printf("%-9s %5d %10s %4s %9s %18s %9s %10s %s\n", info->cmdline, info->pid, "???", "FDS",
+ printf("%-9s %5d %10s %4s %9s %18s %9s %10s %s\n",
+ info->cmdline, info->pid, info->user, "FDS",
"", "", "", "", msg);
goto out;
}
@@ -159,12 +167,26 @@
{
int fd;
struct pid_info_t info;
+ struct stat pidstat;
+ struct passwd *pw;
+
info.pid = pid;
-
snprintf(info.path, sizeof(info.path), "/proc/%d/", pid);
-
info.parent_length = strlen(info.path);
+ // Get the UID by calling stat on the proc/pid directory.
+ if (!stat(info.path, &pidstat)) {
+ pw = getpwuid(pidstat.st_uid);
+ if (pw) {
+ strncpy(info.user, pw->pw_name, USER_DISPLAY_MAX - 1);
+ info.user[USER_DISPLAY_MAX - 1] = '\0';
+ } else {
+ snprintf(info.user, USER_DISPLAY_MAX, "%d", (int)pidstat.st_uid);
+ }
+ } else {
+ strcpy(info.user, "???");
+ }
+
// Read the command line information; each argument is terminated with NULL.
strncat(info.path, "cmdline", sizeof(info.path));
fd = open(info.path, O_RDONLY);
@@ -219,7 +241,7 @@
continue;
// Only inspect directories that are PID numbers
- pid = strtol(de->d_name, &endptr, 10);
+ pid = strtol(de->d_name, &endptr, 10);
if (*endptr != '\0')
continue;