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NSA SELinux for Linux 2.6.xx

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This commit is contained in:
albert 2003-12-24 04:18:24 +00:00
parent e6bf84b8f3
commit c36c11c6b2
9 changed files with 40 additions and 171 deletions
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8
NEWS
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@ -1,11 +1,11 @@
procps-3.1.14 --> procps-3.1.15
install to /lib64 if it exists
hide kernel PID bug (Linux 2.4.13-pre1 to 2.4.MAX) #217278 #219730 #217525
hide kernel PID bug (Linux 2.4.13-pre1 to 2.4.MAX) #217278 #219730 #217525 #224470
ps: faster threaded display
...top: Jim's fix
...top: newline fix
...sysctl: man page tweak
top: auto-margin problem #217559
ps: support NSA SELinux, all builds, Linux 2.6+ #193648
sysctl: tweak man page for ESR's broken parser
procps-3.1.13 --> procps-3.1.14

4
proc/readproc.c
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@ -27,10 +27,6 @@
#include <sys/types.h>
#include <sys/stat.h>
#ifdef FLASK_LINUX
#include <fs_secure.h>
#endif
// sometimes it's easier to do this manually, w/o gcc helping
#ifdef PROF
extern void __cyg_profile_func_enter(void*,void*);

1
ps/common.h
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@ -139,7 +139,6 @@
#define FF_LX 0x0100 /* X */
#define FF_Lm 0x0200 /* m */ /* overloaded: threads, sort, format */
#define FF_Fc 0x0400 /* --context */ /* Flask security context format */
#define FF_Fs 0x0800 /* --SID */ /* Flask SID format */
/* predefined format modifier flags such as: -l -f l u s -j */
#define FM_c 0x0001 /* -c */

15
ps/help.c
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@ -34,21 +34,18 @@ const char *help_message =
"-j,j job control s signal --group --user --sid --rows\n"
"-O,O preloaded -o v virtual memory --cumulative --format --deselect\n"
"-l,l long u user-oriented --sort --tty --forest --version\n"
"-F extra full X registers --heading --no-heading\n"
#ifdef FLASK_LINUX
" --context --SID (Flask only)\n"
#endif
"-F extra full X registers --heading --no-heading --context\n"
" ********* misc options *********\n"
"-V,V show version L list format codes f ASCII art forest\n"
"-m,m show threads S children in sum -y change -l format\n"
"-n,N set namelist file c true command name n numeric WCHAN,UID\n"
"-w,w wide output e show environment -H process hierarchy\n"
"-V,V show version L list format codes f ASCII art forest\n"
"-m,m,-L,-T,H threads S children in sum -y change -l format\n"
"-c scheduling class c true command name n numeric WCHAN,UID\n"
"-w,w wide output e show environment -H process hierarchy\n"
;
/* Missing:
*
* -c -L -P -M --info
* -P -M --info
*
*/

168
ps/output.c
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@ -65,14 +65,6 @@
#include "../proc/escape.h"
#include "common.h"
#ifdef FLASK_LINUX
#include <errno.h>
#include <fs_secure.h>
#include <ss.h>
#define DEF_CTXTLEN 255
#endif
/* TODO:
* Stop assuming system time is local time.
*/
@ -941,142 +933,38 @@ static int pr_sgi_p(char *restrict const outbuf, const proc_t *restrict const pp
}
/****************** FLASK security stuff **********************/
#ifdef FLASK_LINUX
/*
* The sr_fn() calls -- for sorting -- don't return errors because
* the same errors should show up when the printing function pr_fn()
* is called, at which point the error goes onscreen.
*/
/* as above, creates sr_secsid function */
CMP_INT(secsid) /* FLASK security ID, **NOT** a session ID -- ugh */
static int pr_secsid(char *restrict const outbuf, const proc_t *restrict const pp){
return sprintf(outbuf, "%d", (int) pp->secsid);
}
/****************** FLASK & seLinux security stuff **********************/
// move the bulk of this to libproc sometime
static int pr_context(char *restrict const outbuf, const proc_t *restrict const pp){
char *ctxt; /* should be security_context_t */
unsigned int len;
int rv;
char filename[48];
size_t len;
ssize_t num_read;
int fd;
len = DEF_CTXTLEN;
ctxt = (char *) calloc(1, len);
if ( ctxt != NULL )
rv = security_sid_to_context(pp->secsid, (security_context_t) ctxt, &len);
else
return sprintf(outbuf, "-");
// wchan file is suitable for testing
//snprintf(filename, sizeof filename, "/proc/%d/task/%d/wchan", pp->tgid, pp->tid);
snprintf(filename, sizeof filename, "/proc/%d/task/%d/attr/current", pp->tgid, pp->tid);
if ( rv ) {
if ( errno != ENOSPC ) {
free(ctxt);
return sprintf(outbuf, "-");
} else {
free(ctxt);
ctxt = (char *) calloc(1, len);
if ( ctxt != NULL ) {
rv = security_sid_to_context(pp->secsid, (security_context_t) ctxt, &len);
if ( rv ) {
free(ctxt);
return sprintf(outbuf, "-");
} else {
rv = sprintf(outbuf, "%s", ctxt);
free(ctxt);
return rv;
}
} else { /* calloc() failed */
return sprintf(outbuf, "-");
}
}
} else {
rv = sprintf(outbuf, "%s", ctxt);
free(ctxt);
return rv;
}
fd = open(filename, O_RDONLY, 0);
if(likely(fd==-1)) goto fail;
num_read = read(fd, outbuf, 666);
close(fd);
if(unlikely(num_read<=0)) goto fail;
outbuf[num_read] = '\0';
len = strspn(outbuf, "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ:_0123456789");
if(!len) goto fail;
outbuf[len] = '\0';
return len;
fail:
outbuf[0] = '-';
outbuf[1] = '\0';
return 1;
}
static int sr_context ( const proc_t* P, const proc_t* Q ) {
char *ctxt_P, *ctxt_Q; /* type should be security_context_t */
unsigned int len;
int rv;
len = DEF_CTXTLEN;
ctxt_P = (char *) calloc(1, len);
ctxt_Q = (char *) calloc(1, len);
rv = security_sid_to_context(P->secsid, (security_context_t) ctxt_P, &len);
if ( rv ) {
if ( errno != ENOSPC ) {
free(ctxt_P);
/* error should resurface during printing */
return( 0 );
} else {
free(ctxt_P);
ctxt_P = (char *) calloc(1, len);
if ( ctxt_P != NULL ) {
rv = security_sid_to_context(P->secsid, (security_context_t) ctxt_P, &len);
if ( rv ) {
free(ctxt_P);
/* error should resurface during printing */
return( 0 );
}
} else { /* calloc() failed */
/* error should resurface during printing */
return( 0 );
}
}
}
len = DEF_CTXTLEN;
rv = security_sid_to_context(Q->secsid, (security_context_t) ctxt_Q, &len);
if ( rv ) {
if ( errno != ENOSPC ) {
free(ctxt_P);
free(ctxt_Q);
/* error should resurface during printing */
return( 0 );
} else {
free(ctxt_Q);
ctxt_Q = (char *) calloc(1, len);
if ( ctxt_Q != NULL ) {
rv = security_sid_to_context(Q->secsid, (security_context_t) ctxt_Q, &len);
if ( rv ) {
free(ctxt_P);
free(ctxt_Q);
/* error should resurface during printing */
return( 0 );
}
} else { /* calloc() failed */
/* error should resurface during printing */
free(ctxt_P);
return( 0 );
}
}
}
rv = strcmp(ctxt_P, ctxt_Q);
free(ctxt_P);
free(ctxt_Q);
return( rv );
}
#else
/****** dummy functions ******/
#define pr_secsid pr_nop
#define sr_secsid sr_nop
#define pr_context pr_nop
#define sr_context sr_nop
#endif
/***************************************************************************/
/*************************** other stuff ***********************************/
@ -1164,7 +1052,7 @@ static const format_struct format_array[] = {
{"cnswap", "-", pr_nop, sr_cnswap, 1, 0, LNX, AN|RIGHT},
{"comm", "COMMAND", pr_comm, sr_nop, 16, COM, U98, PO|UNLIMITED}, /*ucomm*/
{"command", "COMMAND", pr_args, sr_nop, 16, ARG, XXX, PO|UNLIMITED}, /*args*/
{"context", "CONTEXT", pr_context, sr_context,40, 0, LNX, AN|LEFT},
{"context", "CONTEXT", pr_context, sr_nop, 40, 0, LNX, AN|LEFT},
{"cp", "CP", pr_cp, sr_pcpu, 3, 0, DEC, ET|RIGHT}, /*cpu*/
{"cpu", "CPU", pr_nop, sr_nop, 3, 0, BSD, AN|RIGHT}, /* FIXME ... HP-UX wants this as the CPU number for SMP? */
{"cputime", "TIME", pr_time, sr_nop, 8, 0, DEC, ET|RIGHT}, /*time*/
@ -1275,7 +1163,6 @@ static const format_struct format_array[] = {
{"sched", "SCH", pr_sched, sr_sched, 3, 0, AIX, TO|RIGHT},
{"scnt", "SCNT", pr_nop, sr_nop, 4, 0, DEC, AN|RIGHT}, /* man page misspelling of scount? */
{"scount", "SC", pr_nop, sr_nop, 4, 0, AIX, AN|RIGHT}, /* scnt==scount, DEC claims both */
{"secsid", "SID", pr_secsid, sr_secsid, 6, 0, LNX, AN|RIGHT}, /* Flask Linux */
{"sess", "SESS", pr_sess, sr_session, 5, 0, XXX, PO|PIDMAX|RIGHT},
{"session", "SESS", pr_sess, sr_session, 5, 0, LNX, PO|PIDMAX|RIGHT},
{"sgi_p", "P", pr_sgi_p, sr_nop, 1, 0, LNX, TO|RIGHT}, /* "cpu" number */
@ -1398,8 +1285,7 @@ static const macro_struct macro_array[] = {
{"FL5FMT", "f,state,uid,pid,ppid,pcpu,pri,nice,rss,wchan,start,time,command"}, /* Digital -fl */
{"FLASK_context", "pid,secsid,context,command"}, /* Flask Linux context, --context */
{"FLASK_sid", "pid,secsid,command"}, /* Flask Linux SID, --SID */
{"FLASK_context", "pid,context,command"}, /* Flask Linux context, --context */
{"HP_", "pid,tty,time,comm"}, /* HP default */
{"HP_f", "user,pid,ppid,cpu,stime,tty,time,args"}, /* HP -f */

6
ps/parser.c
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@ -737,7 +737,6 @@ static const char *parse_gnu_option(void){
gnu_table_struct *found;
static const gnu_table_struct gnu_table[] = {
{"Group", &&case_Group}, /* rgid */
{"SID", &&case_secsid},
{"User", &&case_User}, /* ruid */
{"cols", &&case_cols},
{"columns", &&case_columns},
@ -765,7 +764,6 @@ static const char *parse_gnu_option(void){
{"pid", &&case_pid},
{"ppid", &&case_ppid},
{"rows", &&case_rows},
{"secsid", &&case_secsid},
{"sid", &&case_sid},
{"sort", &&case_sort},
{"tty", &&case_tty},
@ -954,10 +952,6 @@ static const char *parse_gnu_option(void){
trace("--context\n");
format_flags |= FF_Fc;
return NULL;
case_secsid:
trace("--secsid\n");
format_flags |= FF_Fs;
return NULL;
}
/*************** process trailing PIDs **********************/

4
ps/ps.1
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@ -97,8 +97,7 @@ s display signal format
u display user-oriented format
v display virtual memory format
--format user-defined format
--context (SELinux only) Display security context format; implies --secsid
--secsid (SELinux only) Display Security ID
--context display security context format (NSA SELinux, etc.)
OUTPUT MODIFIERS
-H show process hierarchy (forest)
@ -410,7 +409,6 @@ rsz RSZ
ruid RUID
ruser RUSER
s S
secsid SECSID
sess SESS
session SESS
sgi_p P

3
ps/sortformat.c
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@ -860,9 +860,8 @@ const char *process_sf_options(int localbroken){
case FF_LX: spec="OL_X"; break;
case FF_Lm: spec="OL_m"; break;
/* These are FLASK security options. */
/* This is the sole FLASK security option. */
case FF_Fc: spec="FLASK_context"; break;
case FF_Fs: spec="FLASK_sid"; break;
} /* end switch(format_flags) */

2
sysctl.8
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@ -14,7 +14,7 @@ sysctl \- configure kernel parameters at runtime
.br
.B "sysctl [-n] [-e] -w variable=value ..."
.br
.B "sysctl [-n] [-e] -p <filename> (default /etc/sysctl.conf)"
.B "sysctl [-n] [-e] -p <filename>"
.br
.B "sysctl [-n] [-e] -a"
.br