| #include <unistd.h> |
| #include <fcntl.h> |
| #include <string.h> |
| #include "selinux_internal.h" |
| #include <stdlib.h> |
| #include <errno.h> |
| #include <sys/xattr.h> |
| #include "policy.h" |
| |
| int getfilecon(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 = getxattr(path, XATTR_NAME_SELINUX, buf, size - 1); |
| if (ret < 0 && errno == ERANGE) { |
| char *newbuf; |
| |
| size = getxattr(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 = getxattr(path, XATTR_NAME_SELINUX, buf, size - 1); |
| } |
| out: |
| if (ret == 0) { |
| /* Re-map empty attribute values to errors. */ |
| errno = EOPNOTSUPP; |
| ret = -1; |
| } |
| if (ret < 0) |
| free(buf); |
| else |
| *context = buf; |
| return ret; |
| } |