mirror of
https://github.com/SELinuxProject/selinux
synced 2024-12-30 10:02:15 +00:00
9eb9c93275
In attempting to enable building various part of Android with -Wall -Werror, we found that the const security_context_t declarations in libselinux are incorrect; const char * was intended, but const security_context_t translates to char * const and triggers warnings on passing const char * from the caller. Easiest fix is to replace them all with const char *. And while we are at it, just get rid of all usage of security_context_t itself as it adds no value - there is no true encapsulation of the security context strings and callers already directly use string functions on them. typedef left to permit building legacy users until such a time as all are updated. This is a port of Change-Id I2f9df7bb9f575f76024c3e5f5b660345da2931a7 from Android, augmented to deal with all of the other code in upstream libselinux and updating the man pages too. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Acked-by: Eric Paris <eparis@redhat.com>
73 lines
1.2 KiB
C
73 lines
1.2 KiB
C
#include <unistd.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include "selinux_internal.h"
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#include "policy.h"
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#include <limits.h>
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#define SELINUX_INITCON_DIR "/initial_contexts/"
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int security_get_initial_context_raw(const char * name, char ** con)
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{
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char path[PATH_MAX];
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char *buf;
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size_t size;
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int fd, ret;
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if (!selinux_mnt) {
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errno = ENOENT;
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return -1;
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}
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snprintf(path, sizeof path, "%s%s%s",
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selinux_mnt, SELINUX_INITCON_DIR, name);
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fd = open(path, O_RDONLY);
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if (fd < 0)
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return -1;
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size = selinux_page_size;
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buf = malloc(size);
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if (!buf) {
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ret = -1;
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goto out;
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}
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memset(buf, 0, size);
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ret = read(fd, buf, size - 1);
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if (ret < 0)
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goto out2;
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*con = strdup(buf);
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if (!(*con)) {
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ret = -1;
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goto out2;
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}
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ret = 0;
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out2:
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free(buf);
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out:
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close(fd);
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return ret;
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}
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hidden_def(security_get_initial_context_raw)
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int security_get_initial_context(const char * name, char ** con)
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{
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int ret;
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char * rcon;
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ret = security_get_initial_context_raw(name, &rcon);
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if (!ret) {
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ret = selinux_raw_to_trans_context(rcon, con);
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freecon(rcon);
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}
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return ret;
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}
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hidden_def(security_get_initial_context)
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