tools: lxc-unshare: replace write_id_mapping() to the same function in conf.c

Signed-off-by: 2xsec <dh48.jeong@samsung.com>

diff --git a/src/lxc/tools/lxc_unshare.c b/src/lxc/tools/lxc_unshare.c
index 669186ec163c38135f61b2649a7a3ebebc3e657c..85b9d4c02a11f1046d1f68feec5a62d6fb10ae03 100644 (file)
--- a/src/lxc/tools/lxc_unshare.c
+++ b/src/lxc/tools/lxc_unshare.c
@@ -41,6 +41,7 @@
 
 #include "arguments.h"
 #include "caps.h"
+#include "conf.h"
 #include "namespace.h"
 #include "utils.h"
 
@@ -220,28 +221,6 @@ static int do_start(void *arg)
        return 1;
 }
 
-static int write_id_mapping(pid_t pid, const char *buf, size_t buf_size)
-{
-       char path[MAXPATHLEN];
-       int fd, ret;
-
-       ret = snprintf(path, MAXPATHLEN, "/proc/%d/uid_map", pid);
-       if (ret < 0 || ret >= MAXPATHLEN)
-               return -E2BIG;
-
-       fd = open(path, O_WRONLY);
-       if (fd < 0)
-               return -1;
-
-       errno = 0;
-       ret = lxc_write_nointr(fd, buf, buf_size);
-       close(fd);
-       if (ret < 0 || (size_t)ret != buf_size)
-               return -1;
-
-       return 0;
-}
-
 int main(int argc, char *argv[])
 {
        char **args;
@@ -357,7 +336,7 @@ int main(int argc, char *argv[])
                        exit(EXIT_FAILURE);
                }
 
-               ret = write_id_mapping(pid, umap, strlen(umap));
+               ret = write_id_mapping(ID_TYPE_UID, pid, umap, strlen(umap));
                if (ret < 0) {
                        close(start_arg.wait_fd);
                        fprintf(stderr, "uid mapping failed\n");