Chillcraft/libgtop
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Major code cleanups. We now use open () and read ().

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This commit is contained in:
Martin Baulig
1998-08-16 18:46:53 +00:00
parent 739ce693dc
commit 59bb8d0ced
8 changed files with 251 additions and 268 deletions
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97
sysdeps/linux/procuid.c
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@@ -25,7 +25,9 @@
static const unsigned long _glibtop_sysdeps_proc_uid =
(1 << GLIBTOP_PROC_UID_UID) + (1 << GLIBTOP_PROC_UID_EUID) +
(1 << GLIBTOP_PROC_UID_GID) + (1 << GLIBTOP_PROC_UID_EGID) +
(1 << GLIBTOP_PROC_UID_GID) + (1 << GLIBTOP_PROC_UID_EGID);
static const unsigned long _glibtop_sysdeps_proc_uid_stat =
(1 << GLIBTOP_PROC_UID_PID) + (1 << GLIBTOP_PROC_UID_PPID) +
(1 << GLIBTOP_PROC_UID_PGRP) + (1 << GLIBTOP_PROC_UID_SESSION) +
(1 << GLIBTOP_PROC_UID_TTY) + (1 << GLIBTOP_PROC_UID_TPGID) +
@@ -38,7 +40,8 @@ static const unsigned long _glibtop_sysdeps_proc_uid =
void
glibtop_init_proc_uid_s (glibtop *server)
{
server->sysdeps.proc_uid = _glibtop_sysdeps_proc_uid;
server->sysdeps.proc_uid = _glibtop_sysdeps_proc_uid |
_glibtop_sysdeps_proc_uid_stat;
}
/* Provides detailed information about a process. */
@@ -46,65 +49,63 @@ glibtop_init_proc_uid_s (glibtop *server)
void
glibtop_get_proc_uid_s (glibtop *server, glibtop_proc_uid *buf, pid_t pid)
{
char input [BUFSIZ], *tmp;
int nread;
FILE *f;
char buffer [BUFSIZ], *p;
glibtop_init_s (&server, GLIBTOP_SYSDEPS_PROC_UID, 0);
memset (buf, 0, sizeof (glibtop_proc_uid));
sprintf (input, "/proc/%d/status", pid);
f = fopen (input, "r");
if (!f) return;
nread = fread (input, 1, BUFSIZ, f);
if (nread < 0) {
fclose (f);
if (proc_status_to_buffer (buffer, pid))
return;
}
input [nread] = 0;
/* Search substring 'Pid:' */
tmp = strstr (input, "Pid:");
p = strstr (buffer, "\nPid:");
if (!p) return;
if (tmp == NULL) return;
p = skip_token (p); /* "Pid:" */
buf->pid = strtoul (p, &p, 0);
sscanf (tmp, "\nPid: %u\nPPid: %u\nUid: %u %u %*u %*u\n"
"Gid: %u %u %*u %*u\n", &buf->pid, &buf->ppid,
&buf->uid, &buf->euid, &buf->gid, &buf->egid);
fclose (f);
p = skip_token (p); /* "PPid:" */
buf->ppid = strtoul (p, &p, 0);
sprintf (input, "/proc/%d/stat", pid);
/* Maybe future Linux versions place something between
* "PPid" and "Uid", so we catch this here. */
p = strstr (p, "\nUid:");
if (!p) return;
f = fopen (input, "r");
if (!f) return;
nread = fread (input, 1, BUFSIZ, f);
if (nread < 0) {
fclose (f);
p = skip_token (p); /* "Uid:" */
buf->uid = strtoul (p, &p, 0);
buf->euid = strtoul (p, &p, 0);
/* We don't know how many entries on the "Uid:" line
* future Linux version will have, so we catch this here. */
p = strstr (p, "\nGid:");
if (!p) return;
p = skip_token (p); /* "Gid:" */
buf->gid = strtoul (p, &p, 0);
buf->egid = strtoul (p, &p, 0);
buf->flags = _glibtop_sysdeps_proc_uid;
if (proc_stat_to_buffer (buffer, pid))
return;
}
p = proc_stat_after_cmd (buffer);
if (!p) return;
p = skip_multiple_token (p, 2);
buf->pgrp = strtoul (p, &p, 0);
buf->session = strtoul (p, &p, 0);
buf->tty = strtoul (p, &p, 0);
buf->tpgid = strtoul (p, &p, 0);
p = skip_multiple_token (p, 9);
input [nread] = 0;
/* This is from guile-utils/gtop/proc/readproc.c */
/* split into "PID (cmd" and "<rest>" */
tmp = strrchr (input, ')');
*tmp = '\0'; /* replace trailing ')' with NUL */
/* parse these two strings separately, skipping the leading "(". */
sscanf(tmp + 2, /* skip space after ')' too */
"%*c %*d %d %d %d %d %*u %*u %*u %*u %*u "
"%*d %*d %*d %*d %d %d",
&buf->pgrp, &buf->session, &buf->tty, &buf->tpgid,
&buf->priority, &buf->nice);
buf->priority = strtoul (p, &p, 0);
buf->nice = strtoul (p, &p, 0);
if (buf->tty == 0)
/* the old notty val, update elsewhere bef. moving to 0 */
@@ -119,7 +120,5 @@ glibtop_get_proc_uid_s (glibtop *server, glibtop_proc_uid *buf, pid_t pid)
/* when tty wasn't full devno */
buf->tty = 4*0x100 + buf->tty;
fclose (f);
buf->flags = _glibtop_sysdeps_proc_uid;
buf->flags |= _glibtop_sysdeps_proc_uid_stat;
}