top: expand this program to include namespaces support

Signed-off-by: Jim Warner <james.warner@comcast.net>

3 files changed, 49 insertions, 2 deletions

diff --git a/top/top.c b/top/top.c
index 151693d..301835e 100644
--- a/top/top.c
+++ b/top/top.c
@@ -254,6 +254,12 @@ SCB_NUM1(FV2, min_delta)
 SCB_NUMx(GID, egid)
 SCB_STRS(GRP, egroup)
 SCB_NUMx(NCE, nice)
+SCB_NUM1(NS1, ns[IPCNS])
+SCB_NUM1(NS2, ns[MNTNS])
+SCB_NUM1(NS3, ns[NETNS])
+SCB_NUM1(NS4, ns[PIDNS])
+SCB_NUM1(NS5, ns[USERNS])
+SCB_NUM1(NS6, ns[UTSNS])
 #ifdef OOMEM_ENABLE
 SCB_NUM1(OOA, oom_adj)
 SCB_NUM1(OOM, oom_score)
@@ -1645,6 +1651,7 @@ end_justifies:
 #define L_EGROUP   PROC_FILLSTATUS | PROC_FILLGRP
 #define L_SUPGRP   PROC_FILLSTATUS | PROC_FILLSUPGRP
 #define L_USED     PROC_FILLSTATUS | PROC_FILLMEM
+#define L_NS       PROC_FILLNS
    // make 'none' non-zero (used to be important to Frames_libflags)
 #define L_NONE     PROC_SPARE_1
    // from either 'stat' or 'status' (preferred), via bits not otherwise used
@@ -1735,10 +1742,16 @@ static FLD_t Fieldstab[] = {
    {     3,     -1,  A_right,  SF(FV1),  L_stat    },
    {     3,     -1,  A_right,  SF(FV2),  L_stat    },
 #ifndef NOBOOST_MEMS
-   {     6,  SK_Kb,  A_right,  SF(USE),  L_USED    }
+   {     6,  SK_Kb,  A_right,  SF(USE),  L_USED    },
 #else
-   {     4,  SK_Kb,  A_right,  SF(USE),  L_USED    }
+   {     4,  SK_Kb,  A_right,  SF(USE),  L_USED    },
 #endif
+   {    10,     -1,  A_right,  SF(NS1),  L_NS      }, // IPCNS
+   {    10,     -1,  A_right,  SF(NS2),  L_NS      }, // MNTNS
+   {    10,     -1,  A_right,  SF(NS3),  L_NS      }, // NETNS
+   {    10,     -1,  A_right,  SF(NS4),  L_NS      }, // PIDNS
+   {    10,     -1,  A_right,  SF(NS5),  L_NS      }, // USERNS
+   {    10,     -1,  A_right,  SF(NS6),  L_NS      }  // UTSNS
  #undef SF
  #undef A_left
  #undef A_right
@@ -2261,6 +2274,7 @@ static void zap_fieldstab (void) {
 
    /* and accommodate optional wider non-scalable columns (maybe) */
    if (!AUTOX_MODE) {
+      int i;
       Fieldstab[P_UED].width = Fieldstab[P_URD].width
          = Fieldstab[P_USD].width = Fieldstab[P_GID].width
          = Rc.fixed_widest ? 5 + Rc.fixed_widest : 5;
@@ -2271,6 +2285,9 @@ static void zap_fieldstab (void) {
          = Rc.fixed_widest ? 8 + Rc.fixed_widest : 8;
       Fieldstab[P_WCH].width
          = Rc.fixed_widest ? 10 + Rc.fixed_widest : 10;
+      for (i = P_NS1; i < P_NS1 + NUM_NS; i++)
+         Fieldstab[i].width
+            = Rc.fixed_widest ? 10 + Rc.fixed_widest : 10;
    }
 
    /* plus user selectable scaling */
@@ -5227,6 +5244,17 @@ static const char *task_show (const WIN_t *q, const proc_t *p) {
          case P_MEM:
             cp = scale_pcnt((float)pages2K(p->resident) * 100 / kb_main_total, W, Jn);
             break;
+         case P_NS1:   // IPCNS
+         case P_NS2:   // MNTNS
+         case P_NS3:   // NETNS
+         case P_NS4:   // PIDNS
+         case P_NS5:   // USERNS
+         case P_NS6:   // UTSNS
+         {  long ino = p->ns[i - P_NS1];
+            if (ino > 0) cp = make_num(ino, W, Jn, i);
+            else cp = make_str("-", W, Js, i);
+         }
+            break;
          case P_NCE:
             cp = make_num(p->nice, W, Jn, AUTOX_NO);
             break;
diff --git a/top/top.h b/top/top.h
index 017644f..e35c09b 100644
--- a/top/top.h
+++ b/top/top.h
@@ -194,6 +194,7 @@ enum pflag {
    P_ENV,
    P_FV1, P_FV2,
    P_USE,
+   P_NS1, P_NS2, P_NS3, P_NS4, P_NS5, P_NS6,
 #ifdef USE_X_COLHDR
    // not really pflags, used with tbl indexing
    P_MAXPFLGS
diff --git a/top/top_nls.c b/top/top_nls.c
index 25c7f56..1dd6d46 100644
--- a/top/top_nls.c
+++ b/top/top_nls.c
@@ -259,6 +259,24 @@ static void build_two_nlstabs (void) {
 /* Translation Hint: maximum 'USED' = 4 */
    Head_nlstab[P_USE] = _("USED");
    Desc_nlstab[P_USE] = _("Res+Swap Size (KiB)");
+/* Translation Hint: maximum 'nsIPC' = 10 */
+   Head_nlstab[P_NS1] = _("nsIPC");
+   Desc_nlstab[P_NS1] = _("IPC namespace Inode");
+/* Translation Hint: maximum 'nsMNT' = 10 */
+   Head_nlstab[P_NS2] = _("nsMNT");
+   Desc_nlstab[P_NS2] = _("MNT namespace Inode");
+/* Translation Hint: maximum 'nsNET' = 10 */
+   Head_nlstab[P_NS3] = _("nsNET");
+   Desc_nlstab[P_NS3] = _("NET namespace Inode");
+/* Translation Hint: maximum 'nsPID' = 10 */
+   Head_nlstab[P_NS4] = _("nsPID");
+   Desc_nlstab[P_NS4] = _("PID namespace Inode");
+/* Translation Hint: maximum 'nsUSER' = 10 */
+   Head_nlstab[P_NS5] = _("nsUSER");
+   Desc_nlstab[P_NS5] = _("USER namespace Inode");
+/* Translation Hint: maximum 'nsUTS' = 10 */
+   Head_nlstab[P_NS6] = _("nsUTS");
+   Desc_nlstab[P_NS6] = _("UTS namespace Inode");
 }