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authorElliott Hughes <enh@google.com>2015-11-07 09:44:10 -0800
committerRob Landley <rob@landley.net>2015-11-09 17:37:36 -0600
commit976eaf88226776260c41b44cce98125ca0b638d6 (patch)
tree500fc4d90d57fd9e7138be379645cf15839aca9c /toys/posix
parent2f69ee2f0f25c6fc1dbc440c14c52aeaaf35b6a8 (diff)
downloadtoybox-976eaf88226776260c41b44cce98125ca0b638d6.tar.gz
Add ps -o CMDLINE.
This is equivalent to Android's historical "NAME" column, showing the first element of /proc/pid/cmdline.
Diffstat (limited to 'toys/posix')
-rw-r--r--toys/posix/ps.c82
1 files changed, 42 insertions, 40 deletions
diff --git a/toys/posix/ps.c b/toys/posix/ps.c
index 6af02a08..0f73d820 100644
--- a/toys/posix/ps.c
+++ b/toys/posix/ps.c
@@ -69,42 +69,43 @@ config PS
Available -o FIELDs:
- ADDR Instruction pointer
- CMD Command line (including args)
- COMM Command name (no args)
- ETIME Elapsed time since process start
- F Process flags (PF_*) from linux source file include/sched.h
- (in octal rather than hex because posix)
- GID Group id
- GROUP Group name
- LABEL Security label
- MAJFL Major page faults
- MINFL Minor page faults
- NI Niceness of process (lower niceness is higher priority)
- PCPU Percentage of CPU time used
- PGID Process Group ID
- PID Process ID
- PPID Parent Process ID
- PRI Priority
- RGID Real (before sgid) group ID
- RGROUP Real (before sgid) group name
- RSS Resident Set Size (memory currently used)
- RUID Real (before suid) user ID
- RUSER Real (before suid) user name
- S Process state:
- R (running) S (sleeping) D (disk sleep) T (stopped) t (traced)
- Z (zombie) X (dead) x (dead) K (wakekill) W (waking)
- STAT Process state (S) plus:
- < high priority N low priority L locked memory
- s session leader + foreground l multithreaded
- STIME Start time of process in hh:mm (size :19 shows yyyy-mm-dd hh:mm:ss)
- SZ Memory Size (4k pages needed to completely swap out process)
- TIME CPU time consumed
- TTY Controlling terminal
- UID User id
- USER User name
- VSZ Virtual memory size (1k units)
- WCHAN Waiting in kernel for
+ ADDR Instruction pointer
+ CMD Command line (from /proc/pid/cmdline, including args)
+ CMDLINE Command line (from /proc/pid/cmdline, no args)
+ COMM Command name (from /proc/pid/stat, no args)
+ ETIME Elapsed time since process start
+ F Process flags (PF_*) from linux source file include/sched.h
+ (in octal rather than hex because posix)
+ GID Group id
+ GROUP Group name
+ LABEL Security label
+ MAJFL Major page faults
+ MINFL Minor page faults
+ NI Niceness of process (lower niceness is higher priority)
+ PCPU Percentage of CPU time used
+ PGID Process Group ID
+ PID Process ID
+ PPID Parent Process ID
+ PRI Priority
+ RGID Real (before sgid) group ID
+ RGROUP Real (before sgid) group name
+ RSS Resident Set Size (memory currently used)
+ RUID Real (before suid) user ID
+ RUSER Real (before suid) user name
+ S Process state:
+ R (running) S (sleeping) D (disk sleep) T (stopped) t (traced)
+ Z (zombie) X (dead) x (dead) K (wakekill) W (waking)
+ STAT Process state (S) plus:
+ < high priority N low priority L locked memory
+ s session leader + foreground l multithreaded
+ STIME Start time of process in hh:mm (size :19 shows yyyy-mm-dd hh:mm:ss)
+ SZ Memory Size (4k pages needed to completely swap out process)
+ TIME CPU time consumed
+ TTY Controlling terminal
+ UID User id
+ USER User name
+ VSZ Virtual memory size (1k units)
+ WCHAN Waiting in kernel for
*/
#define FOR_ps
@@ -354,7 +355,8 @@ static int do_ps(struct dirtree *new)
// Command line limited to 2k displayable. We could dynamically malloc, but
// it'd almost never get used, querying length of a proc file is awkward,
// fixed buffer is nommu friendly... Wait for somebody to complain. :)
- } else if (i==14) {
+ // CMDLINE - command line from /proc/pid/cmdline without arguments
+ } else if (i==14 || i==32) {
int fd;
len = 0;
@@ -365,7 +367,7 @@ static int do_ps(struct dirtree *new)
if (0<(len = read(fd, out, 2047))) {
if (!out[len-1]) len--;
else out[len] = 0;
- for (i = 0; i<len; i++) if (out[i] < ' ') out[i] = ' ';
+ if (i==14) for (i = 0; i<len; i++) if (out[i] < ' ') out[i] = ' ';
}
close(fd);
}
@@ -425,13 +427,13 @@ static char *parse_o(char *type, int length)
"F", "S", "UID", "PID", "PPID", "C", "PRI", "NI", "ADDR", "SZ",
"WCHAN", "STIME", "TTY", "TIME", "CMD", "COMMAND", "ELAPSED", "GROUP",
"%CPU", "PGID", "RGROUP", "RUSER", "USER", "VSZ", "RSS", "MAJFL",
- "GID", "STAT", "RUID", "RGID", "MINFL", "LABEL"
+ "GID", "STAT", "RUID", "RGID", "MINFL", "LABEL", "CMDLINE"
};
// TODO: Android uses -30 for LABEL, but ideally it would auto-size.
signed char widths[] = {1,-1,5,5,5,2,3,3,4+sizeof(long),5,
-6,5,-8,8,-27,-27,11,-8,
4,5,-8,-8,-8,6,5,6,
- 8,-5,4,4,6,-30};
+ 8,-5,4,4,6,-30,-27};
int i, j, k;
// Get title, length of title, type, end of type, and display width