f55e500b0c
Wed Sep 01 2004 root <ccb@redhat.com> - 6.3.2-31 - integrate JFenlason's hz patch, improve pts device reporting
151 lines
3.4 KiB
Diff
151 lines
3.4 KiB
Diff
--- acct-6.3.2/dev_hash.c.pts Thu Apr 18 19:18:15 1996
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+++ acct-6.3.2/dev_hash.c Tue Aug 31 17:20:56 2004
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@@ -29,6 +29,7 @@
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#include <sys/types.h>
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#include <sys/stat.h>
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+#include <sys/utsname.h>
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#include <pwd.h>
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#include "common.h"
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@@ -52,6 +53,11 @@
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# endif
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#endif
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+#ifdef __linux__
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+#define NULLDEV 0
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+#else
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+#define NULLDEV -1
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+#endif
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/* globals */
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@@ -62,6 +68,55 @@
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};
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+/* hash all possible /dev/pts devices as they only appear
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+ * in the filesystem when the device is active.
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+ */
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+
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+static void
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+setup_pts_devices () {
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+
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+ struct utsname uts;
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+ struct dev_data dd;
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+ int i;
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+ struct pts_params {
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+ char *utsname; /* os name */
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+ int base; /* base major number */
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+ int max; /* max # of devices */
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+ int mod; /* number of minors per major */
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+ } *pts_ent, pts_table[] = {
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+ {"Linux", 136, 2048, 256},
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+ { }
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+ };
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+
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+ if( uname (&uts) ) {
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+ /* silent error */
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+ return;
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+ }
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+
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+ for (pts_ent = &(pts_table[0]); pts_ent != NULL; ++pts_ent) {
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+ if (!strcmp (uts.sysname, pts_ent->utsname))
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+ break;
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+ }
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+ if (pts_ent == NULL) return; /* unsupported OS */
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+
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+ for (i = 0; i < pts_ent->max; ++i) {
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+ long dev_num;
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+ struct hashtab_elem *he;
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+ int major, minor;
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+
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+ major = pts_ent->base + (i/pts_ent->mod);
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+ minor = i % pts_ent->mod;
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+ dev_num = ((major << 8) + minor);
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+
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+ dd.name = xmalloc (sizeof(char) * (strlen("pts/xxxx") + 1));
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+ sprintf (dd.name, "pts/%d", i);
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+
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+ he = hashtab_create (dev_table, (void *) & dev_num, sizeof(dev_num));
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+ hashtab_set_value (he, &dd, sizeof (dd));
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+ }
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+}
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+
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+
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/* Read the DIRNAME directory entries and make a linked list of ttys
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(so we can search through it later) */
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@@ -79,7 +134,14 @@
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if ((dirp = opendir (dirname)) == NULL)
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return; /* skip it silently */
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-
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+
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+ if (!strcmp (dirname, "/dev/pts")) {
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+ /* assuming SysV, these are dynamically allocated */
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+ closedir (dirp);
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+ setup_pts_devices ();
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+ return;
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+ }
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+
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for (dp = readdir (dirp); dp != NULL; dp = readdir (dirp))
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{
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char *fullname = (char *) alloca ((strlen (dirname)
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@@ -105,7 +167,7 @@
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dev_num = sp.st_rdev;
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dd.name = (char *) xmalloc (sizeof (char) * (NAMLEN (dp) + 1));
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strcpy (dd.name, dp->d_name);
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-
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+
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he = hashtab_create (dev_table, (void *) &dev_num, sizeof (dev_num));
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hashtab_set_value (he, &dd, sizeof (dd));
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}
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@@ -114,6 +176,8 @@
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}
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+
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+
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/* Return the name of the device associated with DEV_NUM. The
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argument passed was originally a dev_t, but that data type is too
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limited on some systems (won't let us pass -1 because it's an
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@@ -123,10 +187,11 @@
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devname (long dev_num)
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{
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struct hashtab_elem *he;
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+ static char devstr [20];
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/* special case */
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- if (dev_num == -1)
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+ if (dev_num == NULLDEV)
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return "__";
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if (dev_table == NULL)
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@@ -135,6 +200,7 @@
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setup_devices ("/dev"); /* most certainly */
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setup_devices ("/dev/pty"); /* perhaps */
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setup_devices ("/dev/ptym"); /* perhaps */
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+ setup_devices ("/dev/pts"); /* perhaps */
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}
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he = hashtab_find (dev_table, (void *) &dev_num, sizeof (dev_num));
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@@ -144,9 +210,12 @@
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struct dev_data *dd = hashtab_get_value (he);
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return dd->name;
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}
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-
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- /* didn't find it */
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-
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- return "??";
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+
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+ /* didn't find it, return it as [maj,min] */
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+
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+ sprintf (devstr, "[%d,%d]", /* is this portable? */
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+ (int) ((dev_num & 0xFF00) >> 8), (int) (dev_num & 0x00FF));
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+
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+ return devstr;
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}
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