mirror of
https://github.com/topjohnwu/ndk-busybox.git
synced 2024-12-14 15:28:38 +00:00
47cfbf32fd
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
803 lines
21 KiB
C
803 lines
21 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini ps implementation(s) for busybox
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*
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* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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* Fix for SELinux Support:(c)2007 Hiroshi Shinji <shiroshi@my.email.ne.jp>
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* (c)2007 Yuichi Nakamura <ynakam@hitachisoft.jp>
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*
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* Licensed under GPLv2, see file LICENSE in this source tree.
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*/
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//usage:#if ENABLE_DESKTOP
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//usage:
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//usage:#define ps_trivial_usage
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//usage: "[-o COL1,COL2=HEADER]" IF_FEATURE_SHOW_THREADS(" [-T]")
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//usage:#define ps_full_usage "\n\n"
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//usage: "Show list of processes\n"
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//usage: "\n -o COL1,COL2=HEADER Select columns for display"
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//usage: IF_FEATURE_SHOW_THREADS(
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//usage: "\n -T Show threads"
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//usage: )
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//usage:
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//usage:#else /* !ENABLE_DESKTOP */
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//usage:
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//usage:#if !ENABLE_SELINUX && !ENABLE_FEATURE_PS_WIDE
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//usage:#define USAGE_PS "\nThis version of ps accepts no options"
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//usage:#else
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//usage:#define USAGE_PS ""
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//usage:#endif
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//usage:
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//usage:#define ps_trivial_usage
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//usage: ""
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//usage:#define ps_full_usage "\n\n"
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//usage: "Show list of processes\n"
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//usage: USAGE_PS
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//usage: IF_SELINUX(
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//usage: "\n -Z Show selinux context"
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//usage: )
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//usage: IF_FEATURE_PS_WIDE(
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//usage: "\n w Wide output"
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//usage: )
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//usage: IF_FEATURE_PS_LONG(
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//usage: "\n l Long output"
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//usage: )
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//usage: IF_FEATURE_SHOW_THREADS(
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//usage: "\n T Show threads"
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//usage: )
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//usage:
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//usage:#endif /* ENABLE_DESKTOP */
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//usage:
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//usage:#define ps_example_usage
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//usage: "$ ps\n"
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//usage: " PID Uid Gid State Command\n"
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//usage: " 1 root root S init\n"
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//usage: " 2 root root S [kflushd]\n"
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//usage: " 3 root root S [kupdate]\n"
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//usage: " 4 root root S [kpiod]\n"
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//usage: " 5 root root S [kswapd]\n"
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//usage: " 742 andersen andersen S [bash]\n"
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//usage: " 743 andersen andersen S -bash\n"
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//usage: " 745 root root S [getty]\n"
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//usage: " 2990 andersen andersen R ps\n"
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#include "libbb.h"
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#include "common_bufsiz.h"
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#ifdef __linux__
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# include <sys/sysinfo.h>
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#endif
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/* Absolute maximum on output line length */
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enum { MAX_WIDTH = 2*1024 };
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#if ENABLE_FEATURE_PS_TIME || ENABLE_FEATURE_PS_LONG
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static unsigned long get_uptime(void)
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{
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#ifdef __linux__
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struct sysinfo info;
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if (sysinfo(&info) < 0)
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return 0;
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return info.uptime;
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#elif 1
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unsigned long uptime;
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char buf[sizeof(uptime)*3 + 2];
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/* /proc/uptime is "UPTIME_SEC.NN IDLE_SEC.NN\n"
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* (where IDLE is cumulative over all CPUs)
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*/
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if (open_read_close("/proc/uptime", buf, sizeof(buf)) <= 0)
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bb_perror_msg_and_die("can't read '%s'", "/proc/uptime");
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buf[sizeof(buf)-1] = '\0';
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sscanf(buf, "%lu", &uptime);
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return uptime;
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#else
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struct timespec ts;
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if (clock_gettime(CLOCK_MONOTONIC, &ts) < 0)
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return 0;
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return ts.tv_sec;
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#endif
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}
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#endif
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#if ENABLE_DESKTOP
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#include <sys/times.h> /* for times() */
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#ifndef AT_CLKTCK
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# define AT_CLKTCK 17
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#endif
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/* TODO:
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* http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ps.html
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* specifies (for XSI-conformant systems) following default columns
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* (l and f mark columns shown with -l and -f respectively):
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* F l Flags (octal and additive) associated with the process (??)
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* S l The state of the process
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* UID f,l The user ID; the login name is printed with -f
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* PID The process ID
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* PPID f,l The parent process
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* C f,l Processor utilization
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* PRI l The priority of the process; higher numbers mean lower priority
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* NI l Nice value
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* ADDR l The address of the process
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* SZ l The size in blocks of the core image of the process
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* WCHAN l The event for which the process is waiting or sleeping
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* STIME f Starting time of the process
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* TTY The controlling terminal for the process
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* TIME The cumulative execution time for the process
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* CMD The command name; the full command line is shown with -f
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*/
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typedef struct {
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uint16_t width;
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char name6[6];
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const char *header;
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void (*f)(char *buf, int size, const procps_status_t *ps);
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int ps_flags;
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} ps_out_t;
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struct globals {
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ps_out_t* out;
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int out_cnt;
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int print_header;
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int need_flags;
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char *buffer;
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unsigned terminal_width;
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#if ENABLE_FEATURE_PS_TIME
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unsigned kernel_HZ;
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unsigned long seconds_since_boot;
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#endif
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} FIX_ALIASING;
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#define G (*(struct globals*)bb_common_bufsiz1)
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#define out (G.out )
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#define out_cnt (G.out_cnt )
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#define print_header (G.print_header )
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#define need_flags (G.need_flags )
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#define buffer (G.buffer )
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#define terminal_width (G.terminal_width )
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#define kernel_HZ (G.kernel_HZ )
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#define INIT_G() do { setup_common_bufsiz(); } while (0)
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#if ENABLE_FEATURE_PS_TIME
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/* for ELF executables, notes are pushed before environment and args */
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static uintptr_t find_elf_note(uintptr_t findme)
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{
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uintptr_t *ep = (uintptr_t *) environ;
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while (*ep++)
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continue;
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while (*ep) {
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if (ep[0] == findme) {
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return ep[1];
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}
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ep += 2;
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}
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return -1;
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}
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#if ENABLE_FEATURE_PS_UNUSUAL_SYSTEMS
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static unsigned get_HZ_by_waiting(void)
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{
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struct timeval tv1, tv2;
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unsigned t1, t2, r, hz;
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unsigned cnt = cnt; /* for compiler */
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int diff;
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r = 0;
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/* Wait for times() to reach new tick */
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t1 = times(NULL);
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do {
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t2 = times(NULL);
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} while (t2 == t1);
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gettimeofday(&tv2, NULL);
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do {
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t1 = t2;
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tv1.tv_usec = tv2.tv_usec;
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/* Wait exactly one times() tick */
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do {
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t2 = times(NULL);
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} while (t2 == t1);
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gettimeofday(&tv2, NULL);
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/* Calculate ticks per sec, rounding up to even */
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diff = tv2.tv_usec - tv1.tv_usec;
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if (diff <= 0) diff += 1000000;
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hz = 1000000u / (unsigned)diff;
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hz = (hz+1) & ~1;
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/* Count how many same hz values we saw */
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if (r != hz) {
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r = hz;
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cnt = 0;
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}
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cnt++;
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} while (cnt < 3); /* exit if saw 3 same values */
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return r;
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}
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#else
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static inline unsigned get_HZ_by_waiting(void)
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{
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/* Better method? */
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return 100;
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}
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#endif
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static unsigned get_kernel_HZ(void)
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{
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if (kernel_HZ)
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return kernel_HZ;
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/* Works for ELF only, Linux 2.4.0+ */
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kernel_HZ = find_elf_note(AT_CLKTCK);
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if (kernel_HZ == (unsigned)-1)
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kernel_HZ = get_HZ_by_waiting();
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G.seconds_since_boot = get_uptime();
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return kernel_HZ;
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}
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#endif
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/* Print value to buf, max size+1 chars (including trailing '\0') */
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static void func_user(char *buf, int size, const procps_status_t *ps)
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{
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#if 1
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safe_strncpy(buf, get_cached_username(ps->uid), size+1);
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#else
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/* "compatible" version, but it's larger */
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/* procps 2.18 shows numeric UID if name overflows the field */
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/* TODO: get_cached_username() returns numeric string if
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* user has no passwd record, we will display it
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* left-justified here; too long usernames are shown
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* as _right-justified_ IDs. Is it worth fixing? */
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const char *user = get_cached_username(ps->uid);
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if (strlen(user) <= size)
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safe_strncpy(buf, user, size+1);
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else
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sprintf(buf, "%*u", size, (unsigned)ps->uid);
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#endif
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}
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static void func_group(char *buf, int size, const procps_status_t *ps)
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{
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safe_strncpy(buf, get_cached_groupname(ps->gid), size+1);
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}
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static void func_comm(char *buf, int size, const procps_status_t *ps)
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{
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safe_strncpy(buf, ps->comm, size+1);
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}
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static void func_state(char *buf, int size, const procps_status_t *ps)
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{
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safe_strncpy(buf, ps->state, size+1);
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}
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static void func_args(char *buf, int size, const procps_status_t *ps)
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{
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read_cmdline(buf, size+1, ps->pid, ps->comm);
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}
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static void func_pid(char *buf, int size, const procps_status_t *ps)
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{
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sprintf(buf, "%*u", size, ps->pid);
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}
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static void func_ppid(char *buf, int size, const procps_status_t *ps)
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{
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sprintf(buf, "%*u", size, ps->ppid);
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}
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static void func_pgid(char *buf, int size, const procps_status_t *ps)
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{
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sprintf(buf, "%*u", size, ps->pgid);
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}
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static void put_lu(char *buf, int size, unsigned long u)
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{
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char buf4[5];
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/* see http://en.wikipedia.org/wiki/Tera */
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smart_ulltoa4(u, buf4, " mgtpezy")[0] = '\0';
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sprintf(buf, "%.*s", size, buf4);
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}
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static void func_vsz(char *buf, int size, const procps_status_t *ps)
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{
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put_lu(buf, size, ps->vsz);
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}
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static void func_rss(char *buf, int size, const procps_status_t *ps)
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{
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put_lu(buf, size, ps->rss);
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}
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static void func_tty(char *buf, int size, const procps_status_t *ps)
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{
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buf[0] = '?';
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buf[1] = '\0';
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if (ps->tty_major) /* tty field of "0" means "no tty" */
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snprintf(buf, size+1, "%u,%u", ps->tty_major, ps->tty_minor);
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}
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#if ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS
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static void func_rgroup(char *buf, int size, const procps_status_t *ps)
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{
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safe_strncpy(buf, get_cached_groupname(ps->rgid), size+1);
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}
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static void func_ruser(char *buf, int size, const procps_status_t *ps)
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{
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safe_strncpy(buf, get_cached_username(ps->ruid), size+1);
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}
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static void func_nice(char *buf, int size, const procps_status_t *ps)
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{
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sprintf(buf, "%*d", size, ps->niceness);
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}
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#endif
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#if ENABLE_FEATURE_PS_TIME
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static void func_etime(char *buf, int size, const procps_status_t *ps)
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{
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/* elapsed time [[dd-]hh:]mm:ss; here only mm:ss */
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unsigned long mm;
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unsigned ss;
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mm = ps->start_time / get_kernel_HZ();
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/* must be after get_kernel_HZ()! */
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mm = G.seconds_since_boot - mm;
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ss = mm % 60;
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mm /= 60;
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snprintf(buf, size+1, "%3lu:%02u", mm, ss);
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}
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static void func_time(char *buf, int size, const procps_status_t *ps)
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{
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/* cumulative time [[dd-]hh:]mm:ss; here only mm:ss */
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unsigned long mm;
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unsigned ss;
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mm = (ps->utime + ps->stime) / get_kernel_HZ();
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ss = mm % 60;
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mm /= 60;
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snprintf(buf, size+1, "%3lu:%02u", mm, ss);
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}
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#endif
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#if ENABLE_SELINUX
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static void func_label(char *buf, int size, const procps_status_t *ps)
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{
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safe_strncpy(buf, ps->context ? ps->context : "unknown", size+1);
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}
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#endif
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/*
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static void func_nice(char *buf, int size, const procps_status_t *ps)
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{
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ps->???
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}
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static void func_pcpu(char *buf, int size, const procps_status_t *ps)
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{
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}
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*/
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static const ps_out_t out_spec[] = {
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/* Mandated by http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ps.html: */
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{ 8 , "user" ,"USER" ,func_user ,PSSCAN_UIDGID },
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{ 8 , "group" ,"GROUP" ,func_group ,PSSCAN_UIDGID },
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{ 16 , "comm" ,"COMMAND",func_comm ,PSSCAN_COMM },
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{ MAX_WIDTH , "args" ,"COMMAND",func_args ,PSSCAN_COMM },
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{ 5 , "pid" ,"PID" ,func_pid ,PSSCAN_PID },
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{ 5 , "ppid" ,"PPID" ,func_ppid ,PSSCAN_PPID },
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{ 5 , "pgid" ,"PGID" ,func_pgid ,PSSCAN_PGID },
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#if ENABLE_FEATURE_PS_TIME
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{ sizeof("ELAPSED")-1, "etime" ,"ELAPSED",func_etime ,PSSCAN_START_TIME },
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#endif
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#if ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS
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{ 5 , "nice" ,"NI" ,func_nice ,PSSCAN_NICE },
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{ 8 , "rgroup","RGROUP" ,func_rgroup,PSSCAN_RUIDGID },
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{ 8 , "ruser" ,"RUSER" ,func_ruser ,PSSCAN_RUIDGID },
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// { 5 , "pcpu" ,"%CPU" ,func_pcpu ,PSSCAN_ },
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#endif
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#if ENABLE_FEATURE_PS_TIME
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{ 6 , "time" ,"TIME" ,func_time ,PSSCAN_STIME | PSSCAN_UTIME },
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#endif
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{ 6 , "tty" ,"TT" ,func_tty ,PSSCAN_TTY },
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{ 4 , "vsz" ,"VSZ" ,func_vsz ,PSSCAN_VSZ },
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/* Not mandated, but useful: */
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{ 4 , "stat" ,"STAT" ,func_state ,PSSCAN_STATE },
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{ 4 , "rss" ,"RSS" ,func_rss ,PSSCAN_RSS },
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#if ENABLE_SELINUX
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{ 35 , "label" ,"LABEL" ,func_label ,PSSCAN_CONTEXT },
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#endif
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};
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static ps_out_t* new_out_t(void)
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{
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out = xrealloc_vector(out, 2, out_cnt);
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return &out[out_cnt++];
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}
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static const ps_out_t* find_out_spec(const char *name)
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{
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unsigned i;
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char buf[ARRAY_SIZE(out_spec)*7 + 1];
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char *p = buf;
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for (i = 0; i < ARRAY_SIZE(out_spec); i++) {
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if (strncmp(name, out_spec[i].name6, 6) == 0)
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return &out_spec[i];
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p += sprintf(p, "%.6s,", out_spec[i].name6);
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}
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p[-1] = '\0';
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bb_error_msg_and_die("bad -o argument '%s', supported arguments: %s", name, buf);
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}
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static void parse_o(char* opt)
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{
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ps_out_t* new;
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// POSIX: "-o is blank- or comma-separated list" (FIXME)
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char *comma, *equal;
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while (1) {
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comma = strchr(opt, ',');
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equal = strchr(opt, '=');
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if (comma && (!equal || equal > comma)) {
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*comma = '\0';
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*new_out_t() = *find_out_spec(opt);
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*comma = ',';
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opt = comma + 1;
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continue;
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}
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break;
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}
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// opt points to last spec in comma separated list.
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// This one can have =HEADER part.
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new = new_out_t();
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if (equal)
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*equal = '\0';
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*new = *find_out_spec(opt);
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if (equal) {
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*equal = '=';
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new->header = equal + 1;
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// POSIX: the field widths shall be ... at least as wide as
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// the header text (default or overridden value).
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// If the header text is null, such as -o user=,
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// the field width shall be at least as wide as the
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// default header text
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if (new->header[0]) {
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new->width = strlen(new->header);
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print_header = 1;
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}
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} else
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print_header = 1;
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}
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static void alloc_line_buffer(void)
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{
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int i;
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int width = 0;
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for (i = 0; i < out_cnt; i++) {
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|
need_flags |= out[i].ps_flags;
|
|
if (out[i].header[0]) {
|
|
print_header = 1;
|
|
}
|
|
width += out[i].width + 1; /* "FIELD " */
|
|
if ((int)(width - terminal_width) > 0) {
|
|
/* The rest does not fit on the screen */
|
|
//out[i].width -= (width - terminal_width - 1);
|
|
out_cnt = i + 1;
|
|
break;
|
|
}
|
|
}
|
|
#if ENABLE_SELINUX
|
|
if (!is_selinux_enabled())
|
|
need_flags &= ~PSSCAN_CONTEXT;
|
|
#endif
|
|
buffer = xmalloc(width + 1); /* for trailing \0 */
|
|
}
|
|
|
|
static void format_header(void)
|
|
{
|
|
int i;
|
|
ps_out_t* op;
|
|
char *p;
|
|
|
|
if (!print_header)
|
|
return;
|
|
p = buffer;
|
|
i = 0;
|
|
if (out_cnt) {
|
|
while (1) {
|
|
op = &out[i];
|
|
if (++i == out_cnt) /* do not pad last field */
|
|
break;
|
|
p += sprintf(p, "%-*s ", op->width, op->header);
|
|
}
|
|
strcpy(p, op->header);
|
|
}
|
|
printf("%.*s\n", terminal_width, buffer);
|
|
}
|
|
|
|
static void format_process(const procps_status_t *ps)
|
|
{
|
|
int i, len;
|
|
char *p = buffer;
|
|
i = 0;
|
|
if (out_cnt) while (1) {
|
|
out[i].f(p, out[i].width, ps);
|
|
// POSIX: Any field need not be meaningful in all
|
|
// implementations. In such a case a hyphen ( '-' )
|
|
// should be output in place of the field value.
|
|
if (!p[0]) {
|
|
p[0] = '-';
|
|
p[1] = '\0';
|
|
}
|
|
len = strlen(p);
|
|
p += len;
|
|
len = out[i].width - len + 1;
|
|
if (++i == out_cnt) /* do not pad last field */
|
|
break;
|
|
p += sprintf(p, "%*s", len, "");
|
|
}
|
|
printf("%.*s\n", terminal_width, buffer);
|
|
}
|
|
|
|
#if ENABLE_SELINUX
|
|
# define SELINUX_O_PREFIX "label,"
|
|
# define DEFAULT_O_STR (SELINUX_O_PREFIX "pid,user" IF_FEATURE_PS_TIME(",time") ",args")
|
|
#else
|
|
# define DEFAULT_O_STR ("pid,user" IF_FEATURE_PS_TIME(",time") ",args")
|
|
#endif
|
|
|
|
int ps_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int ps_main(int argc UNUSED_PARAM, char **argv)
|
|
{
|
|
procps_status_t *p;
|
|
llist_t* opt_o = NULL;
|
|
char default_o[sizeof(DEFAULT_O_STR)];
|
|
int opt;
|
|
enum {
|
|
OPT_Z = (1 << 0),
|
|
OPT_o = (1 << 1),
|
|
OPT_a = (1 << 2),
|
|
OPT_A = (1 << 3),
|
|
OPT_d = (1 << 4),
|
|
OPT_e = (1 << 5),
|
|
OPT_f = (1 << 6),
|
|
OPT_l = (1 << 7),
|
|
OPT_T = (1 << 8) * ENABLE_FEATURE_SHOW_THREADS,
|
|
};
|
|
|
|
INIT_G();
|
|
|
|
// POSIX:
|
|
// -a Write information for all processes associated with terminals
|
|
// Implementations may omit session leaders from this list
|
|
// -A Write information for all processes
|
|
// -d Write information for all processes, except session leaders
|
|
// -e Write information for all processes (equivalent to -A)
|
|
// -f Generate a full listing
|
|
// -l Generate a long listing
|
|
// -o col1,col2,col3=header
|
|
// Select which columns to display
|
|
/* We allow (and ignore) most of the above. FIXME.
|
|
* -T is picked for threads (POSIX hasn't standardized it).
|
|
* procps v3.2.7 supports -T and shows tids as SPID column,
|
|
* it also supports -L where it shows tids as LWP column.
|
|
*/
|
|
opt_complementary = "o::";
|
|
opt = getopt32(argv, "Zo:aAdefl"IF_FEATURE_SHOW_THREADS("T"), &opt_o);
|
|
if (opt_o) {
|
|
do {
|
|
parse_o(llist_pop(&opt_o));
|
|
} while (opt_o);
|
|
} else {
|
|
/* Below: parse_o() needs char*, NOT const char*,
|
|
* can't pass it constant string. Need to make a copy first.
|
|
*/
|
|
#if ENABLE_SELINUX
|
|
if (!(opt & OPT_Z) || !is_selinux_enabled()) {
|
|
/* no -Z or no SELinux: do not show LABEL */
|
|
strcpy(default_o, DEFAULT_O_STR + sizeof(SELINUX_O_PREFIX)-1);
|
|
} else
|
|
#endif
|
|
{
|
|
strcpy(default_o, DEFAULT_O_STR);
|
|
}
|
|
parse_o(default_o);
|
|
}
|
|
#if ENABLE_FEATURE_SHOW_THREADS
|
|
if (opt & OPT_T)
|
|
need_flags |= PSSCAN_TASKS;
|
|
#endif
|
|
|
|
/* Was INT_MAX, but some libc's go belly up with printf("%.*s")
|
|
* and such large widths */
|
|
terminal_width = MAX_WIDTH;
|
|
if (isatty(1)) {
|
|
terminal_width = get_terminal_width(0);
|
|
if (--terminal_width > MAX_WIDTH)
|
|
terminal_width = MAX_WIDTH;
|
|
}
|
|
alloc_line_buffer();
|
|
format_header();
|
|
|
|
p = NULL;
|
|
while ((p = procps_scan(p, need_flags)) != NULL) {
|
|
format_process(p);
|
|
}
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
|
|
#else /* !ENABLE_DESKTOP */
|
|
|
|
|
|
int ps_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int ps_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
|
|
{
|
|
procps_status_t *p;
|
|
int psscan_flags = PSSCAN_PID | PSSCAN_UIDGID
|
|
| PSSCAN_STATE | PSSCAN_VSZ | PSSCAN_COMM;
|
|
unsigned terminal_width IF_NOT_FEATURE_PS_WIDE(= 79);
|
|
enum {
|
|
OPT_Z = (1 << 0) * ENABLE_SELINUX,
|
|
OPT_T = (1 << ENABLE_SELINUX) * ENABLE_FEATURE_SHOW_THREADS,
|
|
OPT_l = (1 << ENABLE_SELINUX) * (1 << ENABLE_FEATURE_SHOW_THREADS) * ENABLE_FEATURE_PS_LONG,
|
|
};
|
|
#if ENABLE_FEATURE_PS_LONG
|
|
time_t now = now; /* for compiler */
|
|
unsigned long uptime = uptime;
|
|
#endif
|
|
/* If we support any options, parse argv */
|
|
#if ENABLE_SELINUX || ENABLE_FEATURE_SHOW_THREADS || ENABLE_FEATURE_PS_WIDE || ENABLE_FEATURE_PS_LONG
|
|
int opts = 0;
|
|
# if ENABLE_FEATURE_PS_WIDE
|
|
/* -w is a bit complicated */
|
|
int w_count = 0;
|
|
opt_complementary = "-:ww";
|
|
opts = getopt32(argv, IF_SELINUX("Z")IF_FEATURE_SHOW_THREADS("T")IF_FEATURE_PS_LONG("l")
|
|
"w", &w_count);
|
|
/* if w is given once, GNU ps sets the width to 132,
|
|
* if w is given more than once, it is "unlimited"
|
|
*/
|
|
if (w_count) {
|
|
terminal_width = (w_count == 1) ? 132 : MAX_WIDTH;
|
|
} else {
|
|
terminal_width = get_terminal_width(0);
|
|
/* Go one less... */
|
|
if (--terminal_width > MAX_WIDTH)
|
|
terminal_width = MAX_WIDTH;
|
|
}
|
|
# else
|
|
/* -w is not supported, only -Z and/or -T */
|
|
opt_complementary = "-";
|
|
opts = getopt32(argv, IF_SELINUX("Z")IF_FEATURE_SHOW_THREADS("T")IF_FEATURE_PS_LONG("l"));
|
|
# endif
|
|
|
|
# if ENABLE_SELINUX
|
|
if ((opts & OPT_Z) && is_selinux_enabled()) {
|
|
psscan_flags = PSSCAN_PID | PSSCAN_CONTEXT
|
|
| PSSCAN_STATE | PSSCAN_COMM;
|
|
puts(" PID CONTEXT STAT COMMAND");
|
|
} else
|
|
# endif
|
|
if (opts & OPT_l) {
|
|
psscan_flags = PSSCAN_STATE | PSSCAN_UIDGID | PSSCAN_PID | PSSCAN_PPID
|
|
| PSSCAN_TTY | PSSCAN_STIME | PSSCAN_UTIME | PSSCAN_COMM
|
|
| PSSCAN_VSZ | PSSCAN_RSS;
|
|
/* http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ps.html
|
|
* mandates for -l:
|
|
* -F Flags (?)
|
|
* S State
|
|
* UID,PID,PPID
|
|
* -C CPU usage
|
|
* -PRI The priority of the process; higher numbers mean lower priority
|
|
* -NI Nice value
|
|
* -ADDR The address of the process (?)
|
|
* SZ The size in blocks of the core image
|
|
* -WCHAN The event for which the process is waiting or sleeping
|
|
* TTY
|
|
* TIME The cumulative execution time
|
|
* CMD
|
|
* We don't show fields marked with '-'.
|
|
* We show VSZ and RSS instead of SZ.
|
|
* We also show STIME (standard says that -f shows it, -l doesn't).
|
|
*/
|
|
puts("S UID PID PPID VSZ RSS TTY STIME TIME CMD");
|
|
# if ENABLE_FEATURE_PS_LONG
|
|
now = time(NULL);
|
|
uptime = get_uptime();
|
|
# endif
|
|
}
|
|
else {
|
|
puts(" PID USER VSZ STAT COMMAND");
|
|
}
|
|
if (opts & OPT_T) {
|
|
psscan_flags |= PSSCAN_TASKS;
|
|
}
|
|
#endif
|
|
|
|
p = NULL;
|
|
while ((p = procps_scan(p, psscan_flags)) != NULL) {
|
|
int len;
|
|
#if ENABLE_SELINUX
|
|
if (psscan_flags & PSSCAN_CONTEXT) {
|
|
len = printf("%5u %-32.32s %s ",
|
|
p->pid,
|
|
p->context ? p->context : "unknown",
|
|
p->state);
|
|
} else
|
|
#endif
|
|
{
|
|
char buf6[6];
|
|
smart_ulltoa5(p->vsz, buf6, " mgtpezy")[0] = '\0';
|
|
#if ENABLE_FEATURE_PS_LONG
|
|
if (opts & OPT_l) {
|
|
char bufr[6], stime_str[6];
|
|
char tty[2 * sizeof(int)*3 + 2];
|
|
char *endp;
|
|
unsigned sut = (p->stime + p->utime) / 100;
|
|
unsigned elapsed = uptime - (p->start_time / 100);
|
|
time_t start = now - elapsed;
|
|
struct tm *tm = localtime(&start);
|
|
|
|
smart_ulltoa5(p->rss, bufr, " mgtpezy")[0] = '\0';
|
|
|
|
if (p->tty_major == 136)
|
|
/* It should be pts/N, not ptsN, but N > 9
|
|
* will overflow field width...
|
|
*/
|
|
endp = stpcpy(tty, "pts");
|
|
else
|
|
if (p->tty_major == 4) {
|
|
endp = stpcpy(tty, "tty");
|
|
if (p->tty_minor >= 64) {
|
|
p->tty_minor -= 64;
|
|
*endp++ = 'S';
|
|
}
|
|
}
|
|
else
|
|
endp = tty + sprintf(tty, "%d:", p->tty_major);
|
|
strcpy(endp, utoa(p->tty_minor));
|
|
|
|
strftime(stime_str, 6, (elapsed >= (24 * 60 * 60)) ? "%b%d" : "%H:%M", tm);
|
|
stime_str[5] = '\0';
|
|
// S UID PID PPID VSZ RSS TTY STIME TIME CMD
|
|
len = printf("%c %5u %5u %5u %5s %5s %-5s %s %02u:%02u:%02u ",
|
|
p->state[0], p->uid, p->pid, p->ppid, buf6, bufr, tty,
|
|
stime_str, sut / 3600, (sut % 3600) / 60, sut % 60);
|
|
} else
|
|
#endif
|
|
{
|
|
const char *user = get_cached_username(p->uid);
|
|
len = printf("%5u %-8.8s %s %s ",
|
|
p->pid, user, buf6, p->state);
|
|
}
|
|
}
|
|
|
|
{
|
|
int sz = terminal_width - len;
|
|
if (sz >= 0) {
|
|
char buf[sz + 1];
|
|
read_cmdline(buf, sz, p->pid, p->comm);
|
|
puts(buf);
|
|
}
|
|
}
|
|
}
|
|
if (ENABLE_FEATURE_CLEAN_UP)
|
|
clear_username_cache();
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
#endif /* !ENABLE_DESKTOP */
|