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mirror_qemu
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Move runas handling from vl.c to OS specific files. 

Move code to handle runas, ie. change of user id of QEMU process
to OS specific files and provide dummy stub for Win32.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Acked-by: Juan Quintela <quintela@redhat.com>
Acked-by: Richard Henderson <rth@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
master
Jes Sorensen 2010-06-10 11:42:26 +02:00 committed by Blue Swirl
parent 59a5264b99
commit 8847cfe8aa
4 changed files with 31 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
os-posix.c
View File

@ -28,6 +28,7 @@
#include <signal.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <pwd.h>
#include <libgen.h>
/* Needed early for CONFIG_BSD etc. */
@ -36,6 +37,8 @@
#include "net/slirp.h"
#include "qemu-options.h"
static struct passwd *user_pwd;
void os_setup_early_signal_handling(void)
{
struct sigaction act;
@ -146,6 +149,31 @@ void os_parse_cmd_args(int index, const char *optarg)
exit(1);
break;
#endif
case QEMU_OPTION_runas:
user_pwd = getpwnam(optarg);
if (!user_pwd) {
fprintf(stderr, "User \"%s\" doesn't exist\n", optarg);
exit(1);
}
break;
}
return;
}
void os_change_process_uid(void)
{
if (user_pwd) {
if (setgid(user_pwd->pw_gid) < 0) {
fprintf(stderr, "Failed to setgid(%d)\n", user_pwd->pw_gid);
exit(1);
}
if (setuid(user_pwd->pw_uid) < 0) {
fprintf(stderr, "Failed to setuid(%d)\n", user_pwd->pw_uid);
exit(1);
}
if (setuid(0) != -1) {
fprintf(stderr, "Dropping privileges failed\n");
exit(1);
}
}
}

1
qemu-os-posix.h
View File

@ -31,5 +31,6 @@ static inline void os_host_main_loop_wait(int *timeout)
}
void os_setup_signal_handling(void);
void os_change_process_uid(void);
#endif

1
qemu-os-win32.h
View File

@ -43,5 +43,6 @@ void qemu_del_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque);
void os_host_main_loop_wait(int *timeout);
static inline void os_setup_signal_handling(void) {}
static inline void os_change_process_uid(void) {}
#endif

29
vl.c
View File

@ -34,7 +34,6 @@
#ifndef _WIN32
#include <libgen.h>
#include <pwd.h>
#include <sys/times.h>
#include <sys/wait.h>
#include <termios.h>
@ -2310,9 +2309,7 @@ int main(int argc, char **argv, char **envp)
const char *incoming = NULL;
#ifndef _WIN32
int fd = 0;
struct passwd *pwd = NULL;
const char *chroot_dir = NULL;
const char *run_as = NULL;
#endif
int show_vnc_port = 0;
int defconfig = 1;
@ -3060,9 +3057,6 @@ int main(int argc, char **argv, char **envp)
case QEMU_OPTION_chroot:
chroot_dir = optarg;
break;
case QEMU_OPTION_runas:
run_as = optarg;
break;
#endif
case QEMU_OPTION_xen_domid:
if (!(xen_available())) {
@ -3554,14 +3548,6 @@ int main(int argc, char **argv, char **envp)
exit(1);
}
if (run_as) {
pwd = getpwnam(run_as);
if (!pwd) {
fprintf(stderr, "User \"%s\" doesn't exist\n", run_as);
exit(1);
}
}
if (chroot_dir) {
if (chroot(chroot_dir) < 0) {
fprintf(stderr, "chroot failed\n");
@ -3573,20 +3559,7 @@ int main(int argc, char **argv, char **envp)
}
}
if (run_as) {
if (setgid(pwd->pw_gid) < 0) {
fprintf(stderr, "Failed to setgid(%d)\n", pwd->pw_gid);
exit(1);
}
if (setuid(pwd->pw_uid) < 0) {
fprintf(stderr, "Failed to setuid(%d)\n", pwd->pw_uid);
exit(1);
}
if (setuid(0) != -1) {
fprintf(stderr, "Dropping privileges failed\n");
exit(1);
}
}
os_change_process_uid();
if (daemonize) {
dup2(fd, 0);