mirror/freebsd
1
0
Fork 0
mirror of https://git.FreeBSD.org/src.git synced 2025-01-06 13:09:50 +00:00
Code Issues Releases Activity

Restrict -a to root only.

Browse Source 
PR:		bin/25337
This commit is contained in:
Ruslan Ermilov 2001-02-24 10:16:54 +00:00
parent 130c1f25a4
commit b52c326cfc
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=72973
2 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
sbin/dmesg/dmesg.8
View File

@ -54,6 +54,7 @@ Show all data in the message buffer.
This includes any syslog records and This includes any syslog records and
.Pa /dev/console .Pa /dev/console
output. output.
Only root is allowed to use this option.
.It Fl M .It Fl M
Extract values associated with the name list from the specified core Extract values associated with the name list from the specified core
instead of the default instead of the default

7
sbin/dmesg/dmesg.c
View File

@ -45,6 +45,7 @@ static const char rcsid[] =
"$FreeBSD$"; "$FreeBSD$";
#endif /* not lint */ #endif /* not lint */
#include <sys/types.h>
#include <sys/msgbuf.h> #include <sys/msgbuf.h>
#include <err.h> #include <err.h>
@ -53,9 +54,10 @@ static const char rcsid[] =
#include <locale.h> #include <locale.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <sysexits.h>
#include <syslog.h>
#include <unistd.h> #include <unistd.h>
#include <vis.h> #include <vis.h>
#include <sys/syslog.h>
struct nlist nl[] = { struct nlist nl[] = {
#define X_MSGBUF 0 #define X_MSGBUF 0
@ -109,6 +111,9 @@ main(argc, argv)
if (memf != NULL || nlistf != NULL) if (memf != NULL || nlistf != NULL)
setgid(getgid()); setgid(getgid());
if (all && getuid())
errx(EX_NOPERM, "must be root to use -a");
/* Read in kernel message buffer, do sanity checks. */ /* Read in kernel message buffer, do sanity checks. */
if ((kd = kvm_open(nlistf, memf, NULL, O_RDONLY, "dmesg")) == NULL) if ((kd = kvm_open(nlistf, memf, NULL, O_RDONLY, "dmesg")) == NULL)
exit (1); exit (1);