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-rw-r--r--applets/applet_tables.c2
-rw-r--r--include/libbb.h4
-rw-r--r--libbb/procps.c7
-rw-r--r--procps/Config.in15
-rw-r--r--procps/ps.c216
5 files changed, 195 insertions, 49 deletions
diff --git a/applets/applet_tables.c b/applets/applet_tables.c
index 3945f7c51..3353f3662 100644
--- a/applets/applet_tables.c
+++ b/applets/applet_tables.c
@@ -71,7 +71,7 @@ int main(int argc, char **argv)
puts("/* This is a generated file, don't edit */");
- puts("const char applet_names[] ALIGN1 = \"\" \n");
+ puts("const char applet_names[] ALIGN1 = \"\"\n");
for (i = 0; i < NUM_APPLETS; i++) {
printf("\"%s\" \"\\0\"\n", applets[i].name);
}
diff --git a/include/libbb.h b/include/libbb.h
index fef8fe2e0..33e73b27b 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -990,6 +990,7 @@ typedef struct procps_status_t {
* it is memset(0) for each process in procps_scan() */
unsigned long vsz, rss; /* we round it to kbytes */
unsigned long stime, utime;
+ unsigned long start_time;
unsigned pid;
unsigned ppid;
unsigned pgid;
@@ -1032,11 +1033,12 @@ enum {
PSSCAN_SMAPS = (1 << 15) * ENABLE_FEATURE_TOPMEM,
PSSCAN_ARGVN = (1 << 16) * (ENABLE_PGREP | ENABLE_PKILL),
USE_SELINUX(PSSCAN_CONTEXT = 1 << 17,)
+ PSSCAN_START_TIME = 1 << 18,
/* These are all retrieved from proc/NN/stat in one go: */
PSSCAN_STAT = PSSCAN_PPID | PSSCAN_PGID | PSSCAN_SID
| PSSCAN_COMM | PSSCAN_STATE
| PSSCAN_VSZ | PSSCAN_RSS
- | PSSCAN_STIME | PSSCAN_UTIME
+ | PSSCAN_STIME | PSSCAN_UTIME | PSSCAN_START_TIME
| PSSCAN_TTY,
};
procps_status_t* alloc_procps_scan(int flags);
diff --git a/libbb/procps.c b/libbb/procps.c
index 6bc16d166..015ad80ef 100644
--- a/libbb/procps.c
+++ b/libbb/procps.c
@@ -243,7 +243,8 @@ procps_status_t *procps_scan(procps_status_t* sp, int flags)
"%lu %lu " /* utime, stime */
"%*s %*s %*s " /* cutime, cstime, priority */
"%ld " /* nice */
- "%*s %*s %*s " /* timeout, it_real_value, start_time */
+ "%*s %*s " /* timeout, it_real_value */
+ "%lu " /* start_time */
"%lu " /* vsize */
"%lu " /* rss */
/* "%lu %lu %lu %lu %lu %lu " rss_rlim, start_code, end_code, start_stack, kstk_esp, kstk_eip */
@@ -254,6 +255,7 @@ procps_status_t *procps_scan(procps_status_t* sp, int flags)
&sp->pgid, &sp->sid, &tty,
&sp->utime, &sp->stime,
&tasknice,
+ &sp->start_time,
&vsz,
&rss);
if (n != 10)
@@ -280,7 +282,8 @@ procps_status_t *procps_scan(procps_status_t* sp, int flags)
sp->stime = fast_strtoul_10(&cp);
cp = skip_fields(cp, 3); /* cutime, cstime, priority */
tasknice = fast_strtoul_10(&cp);
- cp = skip_fields(cp, 3); /* timeout, it_real_value, start_time */
+ cp = skip_fields(cp, 2); /* timeout, it_real_value */
+ sp->start_time = fast_strtoul_10(&cp);
/* vsz is in bytes and we want kb */
sp->vsz = fast_strtoul_10(&cp) >> 10;
/* vsz is in bytes but rss is in *PAGES*! Can you believe that? */
diff --git a/procps/Config.in b/procps/Config.in
index 7e7ee7922..585893ed8 100644
--- a/procps/Config.in
+++ b/procps/Config.in
@@ -99,6 +99,21 @@ config FEATURE_PS_WIDE
If given once, 132 chars are printed and given more than
one, the length is unlimited.
+config FEATURE_PS_TIME
+ bool "Enable time and elapsed time output"
+ default n
+ depends on PS && DESKTOP
+ help
+ Support -o time and -o etime output specifiers.
+
+config FEATURE_PS_UNUSUAL_SYSTEMS
+ bool "Support Linux prior to 2.4.0 and non-ELF systems"
+ default n
+ depends on FEATURE_PS_TIME
+ help
+ Include support for measuring HZ on old kernels and non-ELF systems
+ (if you are on Linux 2.4.0+ and use ELF, you don't need this)
+
config RENICE
bool "renice"
default n
diff --git a/procps/ps.c b/procps/ps.c
index 08922ebb6..a6c35f101 100644
--- a/procps/ps.c
+++ b/procps/ps.c
@@ -16,6 +16,143 @@ enum { MAX_WIDTH = 2*1024 };
#if ENABLE_DESKTOP
+#include <sys/times.h> /* for times() */
+//#include <sys/sysinfo.h> /* for sysinfo() */
+#ifndef AT_CLKTCK
+#define AT_CLKTCK 17
+#endif
+
+
+#if ENABLE_SELINUX
+#define SELINIX_O_PREFIX "label,"
+#define DEFAULT_O_STR (SELINIX_O_PREFIX "pid,user" USE_FEATURE_PS_TIME(",time"))
+#else
+#define DEFAULT_O_STR ("pid,user" USE_FEATURE_PS_TIME(",time"))
+#endif
+
+typedef struct {
+ uint16_t width;
+ char name[6];
+ const char *header;
+ void (*f)(char *buf, int size, const procps_status_t *ps);
+ int ps_flags;
+} ps_out_t;
+
+struct globals {
+ ps_out_t* out;
+ int out_cnt;
+ int print_header;
+ int need_flags;
+ char *buffer;
+ unsigned terminal_width;
+#if ENABLE_FEATURE_PS_TIME
+ unsigned kernel_HZ;
+ unsigned long long seconds_since_boot;
+#endif
+ char default_o[sizeof(DEFAULT_O_STR)];
+};
+#define G (*(struct globals*)&bb_common_bufsiz1)
+#define out (G.out )
+#define out_cnt (G.out_cnt )
+#define print_header (G.print_header )
+#define need_flags (G.need_flags )
+#define buffer (G.buffer )
+#define terminal_width (G.terminal_width )
+#define kernel_HZ (G.kernel_HZ )
+#define seconds_since_boot (G.seconds_since_boot)
+#define default_o (G.default_o )
+
+#if ENABLE_FEATURE_PS_TIME
+/* for ELF executables, notes are pushed before environment and args */
+static ptrdiff_t find_elf_note(ptrdiff_t findme)
+{
+ ptrdiff_t *ep = (ptrdiff_t *) environ;
+
+ while (*ep++);
+ while (*ep) {
+ if (ep[0] == findme) {
+ return ep[1];
+ }
+ ep += 2;
+ }
+ return -1;
+}
+
+#if ENABLE_FEATURE_PS_UNUSUAL_SYSTEMS
+static unsigned get_HZ_by_waiting(void)
+{
+ struct timeval tv1, tv2;
+ unsigned t1, t2, r, hz;
+ unsigned cnt = cnt; /* for compiler */
+ int diff;
+
+ r = 0;
+
+ /* Wait for times() to reach new tick */
+ t1 = times(NULL);
+ do {
+ t2 = times(NULL);
+ } while (t2 == t1);
+ gettimeofday(&tv2, NULL);
+
+ do {
+ t1 = t2;
+ tv1.tv_usec = tv2.tv_usec;
+
+ /* Wait exactly one times() tick */
+ do {
+ t2 = times(NULL);
+ } while (t2 == t1);
+ gettimeofday(&tv2, NULL);
+
+ /* Calculate ticks per sec, rounding up to even */
+ diff = tv2.tv_usec - tv1.tv_usec;
+ if (diff <= 0) diff += 1000000;
+ hz = 1000000u / (unsigned)diff;
+ hz = (hz+1) & ~1;
+
+ /* Count how many same hz values we saw */
+ if (r != hz) {
+ r = hz;
+ cnt = 0;
+ }
+ cnt++;
+ } while (cnt < 3); /* exit if saw 3 same values */
+
+ return r;
+}
+#else
+static inline unsigned get_HZ_by_waiting(void)
+{
+ /* Better method? */
+ return 100;
+}
+#endif
+
+static unsigned get_kernel_HZ(void)
+{
+ //char buf[64];
+ struct sysinfo info;
+
+ if (kernel_HZ)
+ return kernel_HZ;
+
+ /* Works for ELF only, Linux 2.4.0+ */
+ kernel_HZ = find_elf_note(AT_CLKTCK);
+ if (kernel_HZ == (unsigned)-1)
+ kernel_HZ = get_HZ_by_waiting();
+
+ //if (open_read_close("/proc/uptime", buf, sizeof(buf) <= 0)
+ // bb_perror_msg_and_die("cannot read %s", "/proc/uptime");
+ //buf[sizeof(buf)-1] = '\0';
+ ///sscanf(buf, "%llu", &seconds_since_boot);
+ sysinfo(&info);
+ seconds_since_boot = info.uptime;
+
+ return kernel_HZ;
+}
+#endif
+
/* Print value to buf, max size+1 chars (including trailing '\0') */
static void func_user(char *buf, int size, const procps_status_t *ps)
@@ -73,6 +210,34 @@ static void func_tty(char *buf, int size, const procps_status_t *ps)
snprintf(buf, size+1, "%u,%u", ps->tty_major, ps->tty_minor);
}
+#if ENABLE_FEATURE_PS_TIME
+static void func_etime(char *buf, int size, const procps_status_t *ps)
+{
+ /* elapsed time [[dd-]hh:]mm:ss; here only mm:ss */
+ unsigned long mm;
+ unsigned ss;
+
+ mm = ps->start_time / get_kernel_HZ();
+ /* must be after get_kernel_HZ()! */
+ mm = seconds_since_boot - mm;
+ ss = mm % 60;
+ mm /= 60;
+ snprintf(buf, size+1, "%3lu:%02u", mm, ss);
+}
+
+static void func_time(char *buf, int size, const procps_status_t *ps)
+{
+ /* cumulative time [[dd-]hh:]mm:ss; here only mm:ss */
+ unsigned long mm;
+ unsigned ss;
+
+ mm = (ps->utime + ps->stime) / get_kernel_HZ();
+ ss = mm % 60;
+ mm /= 60;
+ snprintf(buf, size+1, "%3lu:%02u", mm, ss);
+}
+#endif
+
#if ENABLE_SELINUX
static void func_label(char *buf, int size, const procps_status_t *ps)
{
@@ -86,29 +251,11 @@ static void func_nice(char *buf, int size, const procps_status_t *ps)
ps->???
}
-static void func_etime(char *buf, int size, const procps_status_t *ps)
-{
- elapled time [[dd-]hh:]mm:ss
-}
-
-static void func_time(char *buf, int size, const procps_status_t *ps)
-{
- cumulative time [[dd-]hh:]mm:ss
-}
-
static void func_pcpu(char *buf, int size, const procps_status_t *ps)
{
}
*/
-typedef struct {
- uint16_t width;
- char name[6];
- const char *header;
- void (*f)(char *buf, int size, const procps_status_t *ps);
- int ps_flags;
-} ps_out_t;
-
static const ps_out_t out_spec[] = {
// Mandated by POSIX:
{ 8 , "user" ,"USER" ,func_user ,PSSCAN_UIDGID },
@@ -117,13 +264,17 @@ static const ps_out_t out_spec[] = {
{ 5 , "pid" ,"PID" ,func_pid ,PSSCAN_PID },
{ 5 , "ppid" ,"PPID" ,func_ppid ,PSSCAN_PPID },
{ 5 , "pgid" ,"PGID" ,func_pgid ,PSSCAN_PGID },
-// { sizeof("ELAPSED")-1, "etime" ,"ELAPSED",func_etime ,PSSCAN_ },
+#if ENABLE_FEATURE_PS_TIME
+ { sizeof("ELAPSED")-1, "etime" ,"ELAPSED",func_etime ,PSSCAN_START_TIME },
+#endif
// { sizeof("GROUP" )-1, "group" ,"GROUP" ,func_group ,PSSCAN_UIDGID },
// { sizeof("NI" )-1, "nice" ,"NI" ,func_nice ,PSSCAN_ },
// { sizeof("%CPU" )-1, "pcpu" ,"%CPU" ,func_pcpu ,PSSCAN_ },
// { sizeof("RGROUP" )-1, "rgroup","RGROUP" ,func_rgroup,PSSCAN_UIDGID },
// { sizeof("RUSER" )-1, "ruser" ,"RUSER" ,func_ruser ,PSSCAN_UIDGID },
-// { sizeof("TIME" )-1, "time" ,"TIME" ,func_time ,PSSCAN_ },
+#if ENABLE_FEATURE_PS_TIME
+ { 6 , "time" ,"TIME" ,func_time ,PSSCAN_STIME | PSSCAN_UTIME },
+#endif
{ 6 , "tty" ,"TT" ,func_tty ,PSSCAN_TTY },
{ 4 , "vsz" ,"VSZ" ,func_vsz ,PSSCAN_VSZ },
// Not mandated by POSIX, but useful:
@@ -133,31 +284,6 @@ static const ps_out_t out_spec[] = {
#endif
};
-#if ENABLE_SELINUX
-#define SELINIX_O_PREFIX "label,"
-#define DEFAULT_O_STR SELINIX_O_PREFIX "pid,user" /* TODO: ,vsz,stat */ ",args"
-#else
-#define DEFAULT_O_STR "pid,user" /* TODO: ,vsz,stat */ ",args"
-#endif
-
-struct globals {
- ps_out_t* out;
- int out_cnt;
- int print_header;
- int need_flags;
- char *buffer;
- unsigned terminal_width;
- char default_o[sizeof(DEFAULT_O_STR)];
-};
-#define G (*(struct globals*)&bb_common_bufsiz1)
-#define out (G.out )
-#define out_cnt (G.out_cnt )
-#define print_header (G.print_header )
-#define need_flags (G.need_flags )
-#define buffer (G.buffer )
-#define terminal_width (G.terminal_width)
-#define default_o (G.default_o )
-
static ps_out_t* new_out_t(void)
{
int i = out_cnt++;
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-06 20:52:29 +0000