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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;
*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;
}
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