41 lines
1.1 KiB
Diff
41 lines
1.1 KiB
Diff
--- ./src/do_command.c 2023-09-07 09:40:32.016272074 +0200
|
|
+++ ./src/do_command.c 2023-09-07 09:43:04.938995232 +0200
|
|
@@ -30,6 +30,7 @@
|
|
#include <string.h>
|
|
#include <sys/wait.h>
|
|
#include <unistd.h>
|
|
+#include <dirent.h>
|
|
|
|
#include "externs.h"
|
|
#include "funcs.h"
|
|
@@ -239,10 +240,26 @@
|
|
{
|
|
char *shell = env_get("SHELL", jobenv);
|
|
int fd, fdmax = getdtablesize();
|
|
+ DIR *dir;
|
|
+ struct dirent *dent;
|
|
|
|
- /* close all unwanted open file descriptors */
|
|
- for(fd = STDERR + 1; fd < fdmax; fd++) {
|
|
- close(fd);
|
|
+ /*
|
|
+ * if /proc is mounted, we can optimize what fd can be closed,
|
|
+ * but if it isn't available, fall back to the previous behavior.
|
|
+ */
|
|
+ if ((dir = opendir("/proc/self/fd")) != NULL) {
|
|
+ while ((dent = readdir(dir)) != NULL) {
|
|
+ if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
|
|
+ continue;
|
|
+ fd = atoi(dent->d_name);
|
|
+ if (fd > STDERR_FILENO)
|
|
+ close(fd);
|
|
+ }
|
|
+ } else {
|
|
+ /* close all unwanted open file descriptors */
|
|
+ for(fd = STDERR + 1; fd < fdmax; fd++) {
|
|
+ close(fd);
|
|
+ }
|
|
}
|
|
|
|
#if DEBUGGING
|