procps: remove PSSCAN_STAT define, users were using it incorrectly

Also contains small cleanups ps.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

diff --git a/include/libbb.h b/include/libbb.h
index 5d2b4c8..2cac7e6 100644 (file)
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -1545,13 +1545,6 @@ enum {
        PSSCAN_NICE     = (1 << 20) * ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS,
        PSSCAN_RUIDGID  = (1 << 21) * ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS,
        PSSCAN_TASKS    = (1 << 22) * ENABLE_FEATURE_SHOW_THREADS,
-       /* 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_START_TIME
-       /**/            | PSSCAN_TTY | PSSCAN_NICE
-       /**/            | PSSCAN_CPU
 };
 //procps_status_t* alloc_procps_scan(void) FAST_FUNC;
 void free_procps_scan(procps_status_t* sp) FAST_FUNC;

diff --git a/libbb/procps.c b/libbb/procps.c
index 5833a1f..9207e92 100644 (file)
--- a/libbb/procps.c
+++ b/libbb/procps.c
@@ -357,7 +357,14 @@ procps_status_t* FAST_FUNC procps_scan(procps_status_t* sp, int flags)
                        sp->gid = sb.st_gid;
                }
 
-               if (flags & PSSCAN_STAT) {
+               /* These are all retrieved from proc/NN/stat in one go: */
+               if (flags & (PSSCAN_PPID | PSSCAN_PGID | PSSCAN_SID
+                       | PSSCAN_COMM | PSSCAN_STATE
+                       | PSSCAN_VSZ | PSSCAN_RSS
+                       | PSSCAN_STIME | PSSCAN_UTIME | PSSCAN_START_TIME
+                       | PSSCAN_TTY | PSSCAN_NICE
+                       | PSSCAN_CPU)
+               ) {
                        char *cp, *comm1;
                        int tty;
 #if !ENABLE_FEATURE_FAST_TOP

diff --git a/procps/ps.c b/procps/ps.c
index 279f25e..7537118 100644 (file)
--- a/procps/ps.c
+++ b/procps/ps.c
@@ -87,13 +87,6 @@ enum { MAX_WIDTH = 2*1024 };
  * TIME      The cumulative execution time for the process
  * CMD       The command name; the full command line is shown with -f
  */
-#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
-
 typedef struct {
        uint16_t width;
        char name6[6];
@@ -113,7 +106,6 @@ struct globals {
        unsigned kernel_HZ;
        unsigned long long seconds_since_boot;
 #endif
-       char default_o[sizeof(DEFAULT_O_STR)];
 } FIX_ALIASING;
 #define G (*(struct globals*)&bb_common_bufsiz1)
 #define out                (G.out               )
@@ -124,7 +116,6 @@ struct globals {
 #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         )
 #define INIT_G() do { } while (0)
 
 #if ENABLE_FEATURE_PS_TIME
@@ -250,7 +241,7 @@ static void func_comm(char *buf, int size, const procps_status_t *ps)
        safe_strncpy(buf, ps->comm, size+1);
 }
 
-static void func_stat(char *buf, int size, const procps_status_t *ps)
+static void func_state(char *buf, int size, const procps_status_t *ps)
 {
        safe_strncpy(buf, ps->state, size+1);
 }
@@ -394,7 +385,7 @@ static const ps_out_t out_spec[] = {
        { 6                  , "tty"   ,"TT"     ,func_tty   ,PSSCAN_TTY     },
        { 4                  , "vsz"   ,"VSZ"    ,func_vsz   ,PSSCAN_VSZ     },
 /* Not mandated, but useful: */
-       { 4                  , "stat"  ,"STAT"   ,func_stat  ,PSSCAN_STAT    },
+       { 4                  , "stat"  ,"STAT"   ,func_state ,PSSCAN_STATE   },
        { 4                  , "rss"   ,"RSS"    ,func_rss   ,PSSCAN_RSS     },
 #if ENABLE_SELINUX
        { 35                 , "label" ,"LABEL"  ,func_label ,PSSCAN_CONTEXT },
@@ -531,11 +522,19 @@ static void format_process(const procps_status_t *ps)
        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),
@@ -573,7 +572,7 @@ int ps_main(int argc UNUSED_PARAM, char **argv)
                        parse_o(llist_pop(&opt_o));
                } while (opt_o);
        } else {
-               /* Below: parse_o() needs char*, NOT const char*... */
+               /* Below: parse_o() needs char*, NOT const char*, can't give it default_o */
 #if ENABLE_SELINUX
                if (!(opt & OPT_Z) || !is_selinux_enabled()) {
                        /* no -Z or no SELinux: do not show LABEL */