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ping: fix breakage from -I fix

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passwd: SELinux support by KaiGai Kohei <kaigai@ak.jp.nec.com>
This commit is contained in:
Denis Vlasenko 2007-10-20 02:00:49 +00:00
parent aa7a888e42
commit 2edbc2ab85
4 changed files with 50 additions and 2 deletions
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5
include/libbb.h
View File

@ -44,6 +44,8 @@
#if ENABLE_SELINUX
#include <selinux/selinux.h>
#include <selinux/context.h>
#include <selinux/flask.h>
#include <selinux/av_permissions.h>
#endif
#if ENABLE_LOCALE_SUPPORT
@ -818,6 +820,9 @@ extern void set_current_security_context(security_context_t sid);
extern context_t set_security_context_component(security_context_t cur_context,
char *user, char *role, char *type, char *range);
extern void setfscreatecon_or_die(security_context_t scontext);
extern void selinux_preserve_fcontext(int fdesc);
#else
#define selinux_preserve_fcontext(fdesc) ((void)0)
#endif
extern void selinux_or_die(void);
extern int restricted_shell(const char *shell);

14
libbb/selinux_common.c
View File

@ -38,3 +38,17 @@ void setfscreatecon_or_die(security_context_t scontext)
"file creation context to %s", scontext);
}
}
void selinux_preserve_fcontext(int fdesc)
{
security_context_t context;
if (fgetfilecon(fdesc, &context) < 0) {
if (errno == ENODATA || errno == ENOTSUP)
return;
bb_perror_msg_and_die("fgetfilecon failed");
}
setfscreatecon_or_die(context);
freecon(context);
}

29
libbb/update_passwd.c
View File

@ -11,6 +11,31 @@
#include "libbb.h"
#if ENABLE_SELINUX
static void check_selinux_update_passwd(const char *username)
{
security_context_t context;
char *seuser;
if (getuid() != (uid_t)0 || is_selinux_enabled() == 0)
return; /* No need to check */
if (getprevcon_raw(&context) < 0)
bb_perror_msg_and_die("getprevcon failed");
seuser = strtok(context, ":");
if (!seuser)
bb_error_msg_and_die("invalid context '%s'", context);
if (strcmp(seuser, username) != 0) {
if (checkPasswdAccess(PASSWD__PASSWD) != 0)
bb_error_msg_and_die("SELinux: access denied");
}
if (ENABLE_FEATURE_CLEAN_UP)
freecon(context);
}
#else
#define check_selinux_update_passwd(username) ((void)0)
#endif
int update_passwd(const char *filename, const char *username,
const char *new_pw)
{
@ -27,6 +52,8 @@ int update_passwd(const char *filename, const char *username,
int cnt = 0;
int ret = -1; /* failure */
check_selinux_update_passwd(username);
/* New passwd file, "/etc/passwd+" for now */
fnamesfx = xasprintf("%s+", filename);
sfx_char = &fnamesfx[strlen(fnamesfx)-1];
@ -38,6 +65,8 @@ int update_passwd(const char *filename, const char *username,
goto free_mem;
old_fd = fileno(old_fp);
selinux_preserve_fcontext(old_fd);
/* Try to create "/etc/passwd+". Wait if it exists. */
i = 30;
do {

4
networking/ping.c
View File

@ -540,7 +540,7 @@ static void ping4(len_and_sockaddr *lsa)
xbind(pingsock, &source_lsa->sa, source_lsa->len);
}
if (opt_I)
setsockopt(pingsock, SOL_SOCKET, SO_BINDTODEVICE, device, strlen(opt_I) + 1);
setsockopt(pingsock, SOL_SOCKET, SO_BINDTODEVICE, opt_I, strlen(opt_I) + 1);
/* enable broadcast pings */
setsockopt_broadcast(pingsock);
@ -589,7 +589,7 @@ static void ping6(len_and_sockaddr *lsa)
if (source_lsa)
xbind(pingsock, &source_lsa->sa, source_lsa->len);
if (opt_I)
setsockopt(pingsock, SOL_SOCKET, SO_BINDTODEVICE, device, strlen(opt_I) + 1);
setsockopt(pingsock, SOL_SOCKET, SO_BINDTODEVICE, opt_I, strlen(opt_I) + 1);
#ifdef ICMP6_FILTER
{