*
* Licensed under GPLv2, see file LICENSE in this source tree.
*/
-
//config:config PSTREE
-//config: bool "pstree"
+//config: bool "pstree (9.4 kb)"
//config: default y
//config: help
-//config: Display a tree of processes.
+//config: Display a tree of processes.
-//applet:IF_PSTREE(APPLET(pstree, _BB_DIR_USR_BIN, _BB_SUID_DROP))
+//applet:IF_PSTREE(APPLET_NOEXEC(pstree, pstree, BB_DIR_USR_BIN, BB_SUID_DROP, pstree))
//kbuild:lib-$(CONFIG_PSTREE) += pstree.o
//usage: "[-p] [PID|USER]"
//usage:#define pstree_full_usage "\n\n"
//usage: "Display process tree, optionally start from USER or PID\n"
-//usage: "\nOptions:"
//usage: "\n -p Show pids"
#include "libbb.h"
struct child;
+#if ENABLE_FEATURE_SHOW_THREADS
+/* For threads, we add {...} around the comm, so we need two extra bytes */
+# define COMM_DISP_LEN (COMM_LEN + 2)
+#else
+# define COMM_DISP_LEN COMM_LEN
+#endif
+
typedef struct proc {
- char comm[COMM_LEN + 1];
+ char comm[COMM_DISP_LEN + 1];
// char flags; - unused, delete?
pid_t pid;
uid_t uid;
};
#define G (*ptr_to_globals)
#define INIT_G() do { \
- SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
+ SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
} while (0)
dump_by_user(walk->child, uid);
}
+#if ENABLE_FEATURE_SHOW_THREADS
static void handle_thread(const char *comm, pid_t pid, pid_t ppid, uid_t uid)
{
- char threadname[COMM_LEN + 2];
- sprintf(threadname, "{%.*s}", COMM_LEN - 2, comm);
+ char threadname[COMM_DISP_LEN + 1];
+ sprintf(threadname, "{%.*s}", (int)sizeof(threadname) - 3, comm);
add_proc(threadname, pid, ppid, uid/*, 1*/);
}
+#endif
static void mread_proc(void)
{
procps_status_t *p = NULL;
+#if ENABLE_FEATURE_SHOW_THREADS
pid_t parent = 0;
+#endif
int flags = PSSCAN_COMM | PSSCAN_PID | PSSCAN_PPID | PSSCAN_UIDGID | PSSCAN_TASKS;
while ((p = procps_scan(p, flags)) != NULL) {
#endif
{
add_proc(p->comm, p->pid, p->ppid, p->uid/*, 0*/);
+#if ENABLE_FEATURE_SHOW_THREADS
parent = p->pid;
+#endif
}
}
}
INIT_G();
- get_terminal_width_height(1, &G.output_width, NULL);
+ G.output_width = get_terminal_width(0);
- opt_complementary = "?1";
- getopt32(argv, "p");
+ getopt32(argv, "^" "p" "\0" "?1");
argv += optind;
if (argv[0]) {