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| #include <unistd.h>
| #include <fcntl.h>
| #include <string.h>
| #include <stdlib.h>
| #include <errno.h>
| #include <sys/xattr.h>
| #include "selinux_internal.h"
| #include "policy.h"
|
| int lgetfilecon_raw(const char *path, char ** context)
| {
| char *buf;
| ssize_t size;
| ssize_t ret;
|
| size = INITCONTEXTLEN + 1;
| buf = malloc(size);
| if (!buf)
| return -1;
| memset(buf, 0, size);
|
| ret = lgetxattr(path, XATTR_NAME_SELINUX, buf, size - 1);
| if (ret < 0 && errno == ERANGE) {
| char *newbuf;
|
| size = lgetxattr(path, XATTR_NAME_SELINUX, NULL, 0);
| if (size < 0)
| goto out;
|
| size++;
| newbuf = realloc(buf, size);
| if (!newbuf)
| goto out;
|
| buf = newbuf;
| memset(buf, 0, size);
| ret = lgetxattr(path, XATTR_NAME_SELINUX, buf, size - 1);
| }
| out:
| if (ret == 0) {
| /* Re-map empty attribute values to errors. */
| errno = ENOTSUP;
| ret = -1;
| }
| if (ret < 0)
| free(buf);
| else
| *context = buf;
| return ret;
| }
|
| hidden_def(lgetfilecon_raw)
|
| int lgetfilecon(const char *path, char ** context)
| {
| int ret;
| char * rcontext = NULL;
|
| *context = NULL;
|
| ret = lgetfilecon_raw(path, &rcontext);
|
| if (ret > 0) {
| ret = selinux_raw_to_trans_context(rcontext, context);
| freecon(rcontext);
| }
|
| if (ret >= 0 && *context)
| return strlen(*context) + 1;
| return ret;
| }
|
|
