chpst: large code shrink by Vladimir
function old new delta chpst_main 1058 1357 +299 euidgid 56 - -56 suidgid 59 - -59 slimit 208 - -208 packed_usage 24638 24420 -218 edir 375 - -375 ------------------------------------------------------------------------------ (add/remove: 0/4 grow/shrink: 1/1 up/down: 299/-916) Total: -617 bytes
This commit is contained in:
Denis Vlasenko
parent
c90e1be01b
commit
b357149867
@ -365,27 +365,26 @@
|
||||
"-r--r--r-- 1 root root 0 Apr 12 18:25 /tmp/foo\n"
|
||||
|
||||
#define chpst_trivial_usage \
|
||||
"[-vP012] [-u user[:group]] [-U user[:group]] [-e dir] " \
|
||||
"[-/ dir] [-n nice] [-m bytes] [-d bytes] [-o files] " \
|
||||
"[-p processes] [-f bytes] [-c bytes] prog args"
|
||||
"[-vP012] [-u USER[:GRP]] [-U USER[:GRP]] [-e DIR]\n" \
|
||||
" [-/ DIR] [-n NICE] [-m BYTES] [-d BYTES] [-o N]\n" \
|
||||
" [-p N] [-f BYTES] [-c BYTES] PROG ARGS"
|
||||
#define chpst_full_usage "\n\n" \
|
||||
"Change the process state and run specified program\n" \
|
||||
"Change the process state and run PROG\n" \
|
||||
"\nOptions:" \
|
||||
"\n -u USER[:GRP] Set uid and gid" \
|
||||
"\n -U USER[:GRP] Set $UID and $GID in environment" \
|
||||
"\n -e DIR Set environment variables as specified by files" \
|
||||
"\n in DIR: file=1st_line_of_file" \
|
||||
"\n -/ DIR Chroot to DIR" \
|
||||
"\n -n INC Add INC to nice value" \
|
||||
"\n -m BYTES Limit data segment, stack segment, locked physical pages," \
|
||||
"\n and total of all segment per process to BYTES each" \
|
||||
"\n -n NICE Add NICE to nice value" \
|
||||
"\n -m BYTES Same as -d BYTES -s BYTES -l BYTES" \
|
||||
"\n -d BYTES Limit data segment" \
|
||||
"\n -o N Limit the number of open file descriptors per process to N" \
|
||||
"\n -p N Limit number of processes per uid to N" \
|
||||
"\n -f BYTES Limit output file size to BYTES" \
|
||||
"\n -c BYTES Limit core file size to BYTES" \
|
||||
"\n -o N Limit number of open files per process" \
|
||||
"\n -p N Limit number of processes per uid" \
|
||||
"\n -f BYTES Limit output file sizes" \
|
||||
"\n -c BYTES Limit core file size" \
|
||||
"\n -v Verbose" \
|
||||
"\n -P Run prog in a new process group" \
|
||||
"\n -P Create new process group" \
|
||||
"\n -0 Close standard input" \
|
||||
"\n -1 Close standard output" \
|
||||
"\n -2 Close standard error" \
|
||||
@ -394,41 +393,37 @@
|
||||
"account prog args"
|
||||
#define setuidgid_full_usage "\n\n" \
|
||||
"Set uid and gid to account's uid and gid, removing all supplementary\n" \
|
||||
"groups, then run prog"
|
||||
"groups and run PROG"
|
||||
#define envuidgid_trivial_usage \
|
||||
"account prog args"
|
||||
#define envuidgid_full_usage "\n\n" \
|
||||
"Set $UID to account's uid and $GID to account's gid, then run prog"
|
||||
"Set $UID to account's uid and $GID to account's gid and run PROG"
|
||||
#define envdir_trivial_usage \
|
||||
"dir prog args"
|
||||
#define envdir_full_usage "\n\n" \
|
||||
"Set various environment variables as specified by files\n" \
|
||||
"in the directory dir, then run prog"
|
||||
"in the directory dir and run PROG"
|
||||
#define softlimit_trivial_usage \
|
||||
"[-a allbytes] [-c corebytes] [-d databytes] [-f filebytes] " \
|
||||
"[-l lockbytes] [-m membytes] [-o openfiles] [-p processes] " \
|
||||
"[-r residentbytes] [-s stackbytes] [-t cpusecs] prog args"
|
||||
"[-a BYTES] [-m BYTES] [-d BYTES] [-s BYTES] [-l BYTES]\n" \
|
||||
" [-f BYTES] [-c BYTES] [-r BYTES] [-o N] [-p N] [-t N]\n" \
|
||||
" PROG ARGS"
|
||||
#define softlimit_full_usage "\n\n" \
|
||||
"Set soft resource limits, then run prog\n" \
|
||||
"Set soft resource limits, then run PROG\n" \
|
||||
"\nOptions:" \
|
||||
"\n -m n Same as -d n -s n -l n -a n" \
|
||||
"\n -d n Limit the data segment per process to n bytes" \
|
||||
"\n -s n Limit the stack segment per process to n bytes" \
|
||||
"\n -l n Limit the locked physical pages per process to n bytes" \
|
||||
"\n -a n Limit the total of all segments per process to n bytes" \
|
||||
"\n -o n Limit the number of open file descriptors per process to n" \
|
||||
"\n -p n Limit the number of processes per uid to n" \
|
||||
"\n -a BYTES Limit total size of all segments" \
|
||||
"\n -m BYTES Same as -d BYTES -s BYTES -l BYTES -a BYTES" \
|
||||
"\n -d BYTES Limit data segment" \
|
||||
"\n -s BYTES Limit stack segment" \
|
||||
"\n -l BYTES Limit locked memory size" \
|
||||
"\n -o N Limit number of open files per process" \
|
||||
"\n -p N Limit number of processes per uid" \
|
||||
"\nOptions controlling file sizes:" \
|
||||
"\n -f n Limit output file sizes to n bytes" \
|
||||
"\n -c n Limit core file sizes to n bytes" \
|
||||
"\n -f BYTES Limit output file sizes" \
|
||||
"\n -c BYTES Limit core file size" \
|
||||
"\nEfficiency opts:" \
|
||||
"\n -r n Limit the resident set size to n bytes. This limit is not" \
|
||||
"\n enforced unless physical memory is full" \
|
||||
"\n -t n Limit the CPU time to n seconds. This limit is not enforced" \
|
||||
"\n except that the process receives a SIGXCPU signal after n seconds" \
|
||||
"\n" \
|
||||
"\nSome options may have no effect on some operating systems" \
|
||||
"\nn may be =, indicating that soft limit should be set equal to hard limit" \
|
||||
"\n -r BYTES Limit resident set size" \
|
||||
"\n -t N Limit CPU time, process receives" \
|
||||
"\n a SIGXCPU after N seconds" \
|
||||
|
||||
#define chroot_trivial_usage \
|
||||
"NEWROOT [COMMAND...]"
|
||||
|
||||
379
runit/chpst.c
379
runit/chpst.c
@ -29,73 +29,68 @@ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
/* Dependencies on runit_lib.c removed */
|
||||
|
||||
#include "libbb.h"
|
||||
|
||||
#include <dirent.h>
|
||||
|
||||
// Must match constants in chpst_main!
|
||||
#define OPT_verbose (option_mask32 & 0x2000)
|
||||
#define OPT_pgrp (option_mask32 & 0x4000)
|
||||
#define OPT_nostdin (option_mask32 & 0x8000)
|
||||
#define OPT_nostdout (option_mask32 & 0x10000)
|
||||
#define OPT_nostderr (option_mask32 & 0x20000)
|
||||
/*
|
||||
Five applets here: chpst, envdir, envuidgid, setuidgid, softlimit.
|
||||
|
||||
struct globals {
|
||||
char *set_user;
|
||||
char *env_user;
|
||||
const char *env_dir;
|
||||
const char *root;
|
||||
long limitd; /* limitX are initialized to -2 */
|
||||
long limits;
|
||||
long limitl;
|
||||
long limita;
|
||||
long limito;
|
||||
long limitp;
|
||||
long limitf;
|
||||
long limitc;
|
||||
long limitr;
|
||||
long limitt;
|
||||
int nicelvl;
|
||||
Only softlimit and chpst are taking options:
|
||||
|
||||
# common
|
||||
-o N Limit number of open files per process
|
||||
-p N Limit number of processes per uid
|
||||
-m BYTES Same as -d BYTES -s BYTES -l BYTES [-a BYTES]
|
||||
-d BYTES Limit data segment
|
||||
-f BYTES Limit output file sizes
|
||||
-c BYTES Limit core file size
|
||||
# softlimit
|
||||
-a BYTES Limit total size of all segments
|
||||
-s BYTES Limit stack segment
|
||||
-l BYTES Limit locked memory size
|
||||
-r BYTES Limit resident set size
|
||||
-t N Limit CPU time
|
||||
# chpst
|
||||
-u USER[:GRP] Set uid and gid
|
||||
-U USER[:GRP] Set $UID and $GID in environment
|
||||
-e DIR Set environment variables as specified by files in DIR
|
||||
-/ DIR Chroot to DIR
|
||||
-n NICE Add NICE to nice value
|
||||
-v Verbose
|
||||
-P Create new process group
|
||||
-0 -1 -2 Close fd 0,1,2
|
||||
|
||||
Even though we accept all these options for both softlimit and chpst,
|
||||
they are not to be advertised on their help texts.
|
||||
We have enough problems with feature creep in other people's
|
||||
software, don't want to add our own.
|
||||
|
||||
envdir, envuidgid, setuidgid take no options, but they reuse code which
|
||||
handles -e, -U and -u.
|
||||
*/
|
||||
|
||||
enum {
|
||||
OPT_a = (1 << 0) * ENABLE_SOFTLIMIT,
|
||||
OPT_c = (1 << 1) * (ENABLE_SOFTLIMIT || ENABLE_CHPST),
|
||||
OPT_d = (1 << 2) * (ENABLE_SOFTLIMIT || ENABLE_CHPST),
|
||||
OPT_f = (1 << 3) * (ENABLE_SOFTLIMIT || ENABLE_CHPST),
|
||||
OPT_l = (1 << 4) * ENABLE_SOFTLIMIT,
|
||||
OPT_m = (1 << 5) * (ENABLE_SOFTLIMIT || ENABLE_CHPST),
|
||||
OPT_o = (1 << 6) * (ENABLE_SOFTLIMIT || ENABLE_CHPST),
|
||||
OPT_p = (1 << 7) * (ENABLE_SOFTLIMIT || ENABLE_CHPST),
|
||||
OPT_r = (1 << 8) * ENABLE_SOFTLIMIT,
|
||||
OPT_s = (1 << 9) * ENABLE_SOFTLIMIT,
|
||||
OPT_t = (1 << 10) * ENABLE_SOFTLIMIT,
|
||||
OPT_u = (1 << 11) * (ENABLE_CHPST || ENABLE_SETUIDGID),
|
||||
OPT_U = (1 << 12) * (ENABLE_CHPST || ENABLE_ENVUIDGID),
|
||||
OPT_e = (1 << 13) * (ENABLE_CHPST || ENABLE_ENVDIR),
|
||||
OPT_root = (1 << 14) * ENABLE_CHPST,
|
||||
OPT_n = (1 << 15) * ENABLE_CHPST,
|
||||
OPT_v = (1 << 16) * ENABLE_CHPST,
|
||||
OPT_P = (1 << 17) * ENABLE_CHPST,
|
||||
OPT_0 = (1 << 18) * ENABLE_CHPST,
|
||||
OPT_1 = (1 << 19) * ENABLE_CHPST,
|
||||
OPT_2 = (1 << 20) * ENABLE_CHPST,
|
||||
};
|
||||
#define G (*(struct globals*)&bb_common_bufsiz1)
|
||||
#define set_user (G.set_user)
|
||||
#define env_user (G.env_user)
|
||||
#define env_dir (G.env_dir )
|
||||
#define root (G.root )
|
||||
#define limitd (G.limitd )
|
||||
#define limits (G.limits )
|
||||
#define limitl (G.limitl )
|
||||
#define limita (G.limita )
|
||||
#define limito (G.limito )
|
||||
#define limitp (G.limitp )
|
||||
#define limitf (G.limitf )
|
||||
#define limitc (G.limitc )
|
||||
#define limitr (G.limitr )
|
||||
#define limitt (G.limitt )
|
||||
#define nicelvl (G.nicelvl )
|
||||
#define INIT_G() do { \
|
||||
long *p = &limitd; \
|
||||
do *p++ = -2; while (p <= &limitt); \
|
||||
} while (0)
|
||||
|
||||
static void suidgid(char *user)
|
||||
{
|
||||
struct bb_uidgid_t ugid;
|
||||
|
||||
xget_uidgid(&ugid, user);
|
||||
if (setgroups(1, &ugid.gid) == -1)
|
||||
bb_perror_msg_and_die("setgroups");
|
||||
xsetgid(ugid.gid);
|
||||
xsetuid(ugid.uid);
|
||||
}
|
||||
|
||||
static void euidgid(char *user)
|
||||
{
|
||||
struct bb_uidgid_t ugid;
|
||||
|
||||
xget_uidgid(&ugid, user);
|
||||
xsetenv("GID", utoa(ugid.gid));
|
||||
xsetenv("UID", utoa(ugid.uid));
|
||||
}
|
||||
|
||||
static void edir(const char *directory_name)
|
||||
{
|
||||
@ -126,8 +121,8 @@ static void edir(const char *directory_name)
|
||||
continue;
|
||||
fd = open(d->d_name, O_RDONLY | O_NDELAY);
|
||||
if (fd < 0) {
|
||||
if ((errno == EISDIR) && env_dir) {
|
||||
if (OPT_verbose)
|
||||
if ((errno == EISDIR) && directory_name) {
|
||||
if (option_mask32 & OPT_v)
|
||||
bb_perror_msg("warning: %s/%s is a directory",
|
||||
directory_name, d->d_name);
|
||||
continue;
|
||||
@ -175,229 +170,217 @@ static void limit(int what, long l)
|
||||
bb_perror_msg_and_die("setrlimit");
|
||||
}
|
||||
|
||||
static void slimit(void)
|
||||
int chpst_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
||||
int chpst_main(int argc UNUSED_PARAM, char **argv)
|
||||
{
|
||||
if (limitd >= -1) {
|
||||
struct bb_uidgid_t ugid;
|
||||
char *set_user;
|
||||
char *env_user;
|
||||
char *env_dir;
|
||||
char *root;
|
||||
char *nicestr;
|
||||
unsigned limita;
|
||||
unsigned limitc;
|
||||
unsigned limitd;
|
||||
unsigned limitf;
|
||||
unsigned limitl;
|
||||
unsigned limitm;
|
||||
unsigned limito;
|
||||
unsigned limitp;
|
||||
unsigned limitr;
|
||||
unsigned limits;
|
||||
unsigned limitt;
|
||||
unsigned opt;
|
||||
|
||||
if ((ENABLE_CHPST && applet_name[0] == 'c')
|
||||
|| (ENABLE_SOFTLIMIT && applet_name[1] == 'o')
|
||||
) {
|
||||
// FIXME: can we live with int-sized limits?
|
||||
// can we live with 40000 days?
|
||||
// if yes -> getopt converts strings to numbers for us
|
||||
opt_complementary = "-1:a+:c+:d+:f+:l+:m+:o+:p+:r+:s+:t+";
|
||||
opt = getopt32(argv, "+a:c:d:f:l:m:o:p:r:s:t:u:U:e:"
|
||||
USE_CHPST("/:n:vP012"),
|
||||
&limita, &limitc, &limitd, &limitf, &limitl,
|
||||
&limitm, &limito, &limitp, &limitr, &limits, &limitt,
|
||||
&set_user, &env_user, &env_dir
|
||||
USE_CHPST(, &root, &nicestr));
|
||||
argv += optind;
|
||||
if (opt & OPT_m) { // -m means -asld
|
||||
limita = limits = limitl = limitd = limitm;
|
||||
opt |= (OPT_s | OPT_l | OPT_a | OPT_d);
|
||||
}
|
||||
} else {
|
||||
option_mask32 = opt = 0;
|
||||
argv++;
|
||||
}
|
||||
|
||||
// envdir?
|
||||
if (ENABLE_ENVDIR && applet_name[3] == 'd') {
|
||||
env_dir = *argv++;
|
||||
opt |= OPT_e;
|
||||
}
|
||||
|
||||
// setuidgid?
|
||||
if (ENABLE_SETUIDGID && applet_name[0] == 's') {
|
||||
set_user = *argv++;
|
||||
opt |= OPT_u;
|
||||
}
|
||||
|
||||
// envuidgid?
|
||||
if (ENABLE_ENVUIDGID && applet_name[0] == 'e') {
|
||||
env_user = *argv++;
|
||||
opt |= OPT_U;
|
||||
}
|
||||
|
||||
// we must have PROG [ARGS]
|
||||
if (!*argv)
|
||||
bb_show_usage();
|
||||
|
||||
// set limits
|
||||
if (opt & OPT_d) {
|
||||
#ifdef RLIMIT_DATA
|
||||
limit(RLIMIT_DATA, limitd);
|
||||
#else
|
||||
if (OPT_verbose)
|
||||
if (opt & OPT_v)
|
||||
bb_error_msg("system does not support RLIMIT_%s",
|
||||
"DATA");
|
||||
#endif
|
||||
}
|
||||
if (limits >= -1) {
|
||||
if (opt & OPT_s) {
|
||||
#ifdef RLIMIT_STACK
|
||||
limit(RLIMIT_STACK, limits);
|
||||
#else
|
||||
if (OPT_verbose)
|
||||
if (opt & OPT_v)
|
||||
bb_error_msg("system does not support RLIMIT_%s",
|
||||
"STACK");
|
||||
#endif
|
||||
}
|
||||
if (limitl >= -1) {
|
||||
if (opt & OPT_l) {
|
||||
#ifdef RLIMIT_MEMLOCK
|
||||
limit(RLIMIT_MEMLOCK, limitl);
|
||||
#else
|
||||
if (OPT_verbose)
|
||||
if (opt & OPT_v)
|
||||
bb_error_msg("system does not support RLIMIT_%s",
|
||||
"MEMLOCK");
|
||||
#endif
|
||||
}
|
||||
if (limita >= -1) {
|
||||
if (opt & OPT_a) {
|
||||
#ifdef RLIMIT_VMEM
|
||||
limit(RLIMIT_VMEM, limita);
|
||||
#else
|
||||
#ifdef RLIMIT_AS
|
||||
limit(RLIMIT_AS, limita);
|
||||
#else
|
||||
if (OPT_verbose)
|
||||
if (opt & OPT_v)
|
||||
bb_error_msg("system does not support RLIMIT_%s",
|
||||
"VMEM");
|
||||
#endif
|
||||
#endif
|
||||
}
|
||||
if (limito >= -1) {
|
||||
if (opt & OPT_o) {
|
||||
#ifdef RLIMIT_NOFILE
|
||||
limit(RLIMIT_NOFILE, limito);
|
||||
#else
|
||||
#ifdef RLIMIT_OFILE
|
||||
limit(RLIMIT_OFILE, limito);
|
||||
#else
|
||||
if (OPT_verbose)
|
||||
if (opt & OPT_v)
|
||||
bb_error_msg("system does not support RLIMIT_%s",
|
||||
"NOFILE");
|
||||
#endif
|
||||
#endif
|
||||
}
|
||||
if (limitp >= -1) {
|
||||
if (opt & OPT_p) {
|
||||
#ifdef RLIMIT_NPROC
|
||||
limit(RLIMIT_NPROC, limitp);
|
||||
#else
|
||||
if (OPT_verbose)
|
||||
if (opt & OPT_v)
|
||||
bb_error_msg("system does not support RLIMIT_%s",
|
||||
"NPROC");
|
||||
#endif
|
||||
}
|
||||
if (limitf >= -1) {
|
||||
if (opt & OPT_f) {
|
||||
#ifdef RLIMIT_FSIZE
|
||||
limit(RLIMIT_FSIZE, limitf);
|
||||
#else
|
||||
if (OPT_verbose)
|
||||
if (opt & OPT_v)
|
||||
bb_error_msg("system does not support RLIMIT_%s",
|
||||
"FSIZE");
|
||||
#endif
|
||||
}
|
||||
if (limitc >= -1) {
|
||||
if (opt & OPT_c) {
|
||||
#ifdef RLIMIT_CORE
|
||||
limit(RLIMIT_CORE, limitc);
|
||||
#else
|
||||
if (OPT_verbose)
|
||||
if (opt & OPT_v)
|
||||
bb_error_msg("system does not support RLIMIT_%s",
|
||||
"CORE");
|
||||
#endif
|
||||
}
|
||||
if (limitr >= -1) {
|
||||
if (opt & OPT_r) {
|
||||
#ifdef RLIMIT_RSS
|
||||
limit(RLIMIT_RSS, limitr);
|
||||
#else
|
||||
if (OPT_verbose)
|
||||
if (opt & OPT_v)
|
||||
bb_error_msg("system does not support RLIMIT_%s",
|
||||
"RSS");
|
||||
#endif
|
||||
}
|
||||
if (limitt >= -1) {
|
||||
if (opt & OPT_t) {
|
||||
#ifdef RLIMIT_CPU
|
||||
limit(RLIMIT_CPU, limitt);
|
||||
#else
|
||||
if (OPT_verbose)
|
||||
if (opt & OPT_v)
|
||||
bb_error_msg("system does not support RLIMIT_%s",
|
||||
"CPU");
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
/* argv[0] */
|
||||
static void setuidgid(int, char **) NORETURN;
|
||||
static void envuidgid(int, char **) NORETURN;
|
||||
static void envdir(int, char **) NORETURN;
|
||||
static void softlimit(int, char **) NORETURN;
|
||||
if (opt & OPT_P)
|
||||
setsid();
|
||||
|
||||
int chpst_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
||||
int chpst_main(int argc UNUSED_PARAM, char **argv)
|
||||
{
|
||||
INIT_G();
|
||||
if (opt & OPT_e)
|
||||
edir(env_dir);
|
||||
|
||||
if (applet_name[3] == 'd') envdir(argc, argv);
|
||||
if (applet_name[1] == 'o') softlimit(argc, argv);
|
||||
if (applet_name[0] == 's') setuidgid(argc, argv);
|
||||
if (applet_name[0] == 'e') envuidgid(argc, argv);
|
||||
// otherwise we are chpst
|
||||
|
||||
{
|
||||
char *m,*d,*o,*p,*f,*c,*r,*t,*n;
|
||||
getopt32(argv, "+u:U:e:m:d:o:p:f:c:r:t:/:n:vP012",
|
||||
&set_user,&env_user,&env_dir,
|
||||
&m,&d,&o,&p,&f,&c,&r,&t,&root,&n);
|
||||
// if (option_mask32 & 0x1) // -u
|
||||
// if (option_mask32 & 0x2) // -U
|
||||
// if (option_mask32 & 0x4) // -e
|
||||
if (option_mask32 & 0x8) limits = limitl = limita = limitd = xatoul(m); // -m
|
||||
if (option_mask32 & 0x10) limitd = xatoul(d); // -d
|
||||
if (option_mask32 & 0x20) limito = xatoul(o); // -o
|
||||
if (option_mask32 & 0x40) limitp = xatoul(p); // -p
|
||||
if (option_mask32 & 0x80) limitf = xatoul(f); // -f
|
||||
if (option_mask32 & 0x100) limitc = xatoul(c); // -c
|
||||
if (option_mask32 & 0x200) limitr = xatoul(r); // -r
|
||||
if (option_mask32 & 0x400) limitt = xatoul(t); // -t
|
||||
// if (option_mask32 & 0x800) // -/
|
||||
if (option_mask32 & 0x1000) nicelvl = xatoi(n); // -n
|
||||
// The below consts should match #defines at top!
|
||||
//if (option_mask32 & 0x2000) OPT_verbose = 1; // -v
|
||||
//if (option_mask32 & 0x4000) OPT_pgrp = 1; // -P
|
||||
//if (option_mask32 & 0x8000) OPT_nostdin = 1; // -0
|
||||
//if (option_mask32 & 0x10000) OPT_nostdout = 1; // -1
|
||||
//if (option_mask32 & 0x20000) OPT_nostderr = 1; // -2
|
||||
// FIXME: chrooted jail must have /etc/passwd if we move this after chroot!
|
||||
// OTOH chroot fails for non-roots!
|
||||
// SOLUTION: cache uid/gid before chroot, apply uid/gid after
|
||||
if (opt & OPT_U) {
|
||||
xget_uidgid(&ugid, env_user);
|
||||
xsetenv("GID", utoa(ugid.gid));
|
||||
xsetenv("UID", utoa(ugid.uid));
|
||||
}
|
||||
argv += optind;
|
||||
if (!argv || !*argv) bb_show_usage();
|
||||
|
||||
if (OPT_pgrp) setsid();
|
||||
if (env_dir) edir(env_dir);
|
||||
if (root) {
|
||||
if (opt & OPT_u) {
|
||||
xget_uidgid(&ugid, set_user);
|
||||
}
|
||||
|
||||
if (opt & OPT_root) {
|
||||
xchdir(root);
|
||||
xchroot(".");
|
||||
}
|
||||
slimit();
|
||||
if (nicelvl) {
|
||||
|
||||
if (opt & OPT_u) {
|
||||
if (setgroups(1, &ugid.gid) == -1)
|
||||
bb_perror_msg_and_die("setgroups");
|
||||
xsetgid(ugid.gid);
|
||||
xsetuid(ugid.uid);
|
||||
}
|
||||
|
||||
if (opt & OPT_n) {
|
||||
errno = 0;
|
||||
if (nice(nicelvl) == -1)
|
||||
if (nice(xatoi(nicestr)) == -1)
|
||||
bb_perror_msg_and_die("nice");
|
||||
}
|
||||
if (env_user) euidgid(env_user);
|
||||
if (set_user) suidgid(set_user);
|
||||
if (OPT_nostdin) close(0);
|
||||
if (OPT_nostdout) close(1);
|
||||
if (OPT_nostderr) close(2);
|
||||
BB_EXECVP(argv[0], argv);
|
||||
bb_perror_msg_and_die("exec %s", argv[0]);
|
||||
}
|
||||
|
||||
static void setuidgid(int argc UNUSED_PARAM, char **argv)
|
||||
{
|
||||
const char *account;
|
||||
|
||||
account = *++argv;
|
||||
if (!account) bb_show_usage();
|
||||
if (!*++argv) bb_show_usage();
|
||||
suidgid((char*)account);
|
||||
BB_EXECVP(argv[0], argv);
|
||||
bb_perror_msg_and_die("exec %s", argv[0]);
|
||||
}
|
||||
|
||||
static void envuidgid(int argc UNUSED_PARAM, char **argv)
|
||||
{
|
||||
const char *account;
|
||||
|
||||
account = *++argv;
|
||||
if (!account) bb_show_usage();
|
||||
if (!*++argv) bb_show_usage();
|
||||
euidgid((char*)account);
|
||||
BB_EXECVP(argv[0], argv);
|
||||
bb_perror_msg_and_die("exec %s", argv[0]);
|
||||
}
|
||||
|
||||
static void envdir(int argc UNUSED_PARAM, char **argv)
|
||||
{
|
||||
const char *dir;
|
||||
|
||||
dir = *++argv;
|
||||
if (!dir) bb_show_usage();
|
||||
if (!*++argv) bb_show_usage();
|
||||
edir(dir);
|
||||
BB_EXECVP(argv[0], argv);
|
||||
bb_perror_msg_and_die("exec %s", argv[0]);
|
||||
}
|
||||
|
||||
static void softlimit(int argc UNUSED_PARAM, char **argv)
|
||||
{
|
||||
char *a,*c,*d,*f,*l,*m,*o,*p,*r,*s,*t;
|
||||
getopt32(argv, "+a:c:d:f:l:m:o:p:r:s:t:",
|
||||
&a,&c,&d,&f,&l,&m,&o,&p,&r,&s,&t);
|
||||
if (option_mask32 & 0x001) limita = xatoul(a); // -a
|
||||
if (option_mask32 & 0x002) limitc = xatoul(c); // -c
|
||||
if (option_mask32 & 0x004) limitd = xatoul(d); // -d
|
||||
if (option_mask32 & 0x008) limitf = xatoul(f); // -f
|
||||
if (option_mask32 & 0x010) limitl = xatoul(l); // -l
|
||||
if (option_mask32 & 0x020) limits = limitl = limita = limitd = xatoul(m); // -m
|
||||
if (option_mask32 & 0x040) limito = xatoul(o); // -o
|
||||
if (option_mask32 & 0x080) limitp = xatoul(p); // -p
|
||||
if (option_mask32 & 0x100) limitr = xatoul(r); // -r
|
||||
if (option_mask32 & 0x200) limits = xatoul(s); // -s
|
||||
if (option_mask32 & 0x400) limitt = xatoul(t); // -t
|
||||
argv += optind;
|
||||
if (!argv[0]) bb_show_usage();
|
||||
slimit();
|
||||
|
||||
if (opt & OPT_0)
|
||||
close(STDIN_FILENO);
|
||||
if (opt & OPT_1)
|
||||
close(STDOUT_FILENO);
|
||||
if (opt & OPT_2)
|
||||
close(STDERR_FILENO);
|
||||
|
||||
BB_EXECVP(argv[0], argv);
|
||||
bb_perror_msg_and_die("exec %s", argv[0]);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user