Cleanup: use LTTNG_HIDDEN in src/common

[lttng-tools.git] / src / common / utils.c

diff --git a/src/common/utils.c b/src/common/utils.c
index 2f114934fd78c654a43a9b5563f6929bc7422ec6..a18e906d7f6b303d834482b2b00ce7f93a1fcdf5 100644 (file)
--- a/src/common/utils.c
+++ b/src/common/utils.c
@@ -22,6 +22,9 @@
 #include <limits.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
 
 #include <common/common.h>
 
@@ -33,7 +36,7 @@
  * /tmp/test1 does, the real path is returned. In normal time, realpath(3)
  * fails if the end point directory does not exist.
  */
-__attribute__((visibility("hidden")))
+LTTNG_HIDDEN
 char *utils_expand_path(const char *path)
 {
        const char *end_path = path;
@@ -86,7 +89,7 @@ error:
 /*
  * Create a pipe in dst.
  */
-__attribute__((visibility("hidden")))
+LTTNG_HIDDEN
 int utils_create_pipe(int *dst)
 {
        int ret;
@@ -109,7 +112,7 @@ int utils_create_pipe(int *dst)
  * Make sure the pipe opened by this function are closed at some point. Use
  * utils_close_pipe().
  */
-__attribute__((visibility("hidden")))
+LTTNG_HIDDEN
 int utils_create_pipe_cloexec(int *dst)
 {
        int ret, i;
@@ -138,7 +141,7 @@ error:
 /*
  * Close both read and write side of the pipe.
  */
-__attribute__((visibility("hidden")))
+LTTNG_HIDDEN
 void utils_close_pipe(int *src)
 {
        int i, ret;
@@ -163,7 +166,7 @@ void utils_close_pipe(int *src)
 /*
  * Create a new string using two strings range.
  */
-__attribute__((visibility("hidden")))
+LTTNG_HIDDEN
 char *utils_strdupdelim(const char *begin, const char *end)
 {
        char *str;
@@ -184,7 +187,7 @@ error:
 /*
  * Set CLOEXEC flag to the give file descriptor.
  */
-__attribute__((visibility("hidden")))
+LTTNG_HIDDEN
 int utils_set_fd_cloexec(int fd)
 {
        int ret;
@@ -207,7 +210,7 @@ end:
 /*
  * Create pid file to the given path and filename.
  */
-__attribute__((visibility("hidden")))
+LTTNG_HIDDEN
 int utils_create_pid_file(pid_t pid, const char *filepath)
 {
        int ret;
@@ -232,3 +235,69 @@ int utils_create_pid_file(pid_t pid, const char *filepath)
 error:
        return ret;
 }
+
+/*
+ * Recursively create directory using the given path and mode.
+ *
+ * On success, return 0 else a negative error code.
+ */
+LTTNG_HIDDEN
+int utils_mkdir_recursive(const char *path, mode_t mode)
+{
+       char *p, tmp[PATH_MAX];
+       struct stat statbuf;
+       size_t len;
+       int ret;
+
+       assert(path);
+
+       ret = snprintf(tmp, sizeof(tmp), "%s", path);
+       if (ret < 0) {
+               PERROR("snprintf mkdir");
+               goto error;
+       }
+
+       len = ret;
+       if (tmp[len - 1] == '/') {
+               tmp[len - 1] = 0;
+       }
+
+       for (p = tmp + 1; *p; p++) {
+               if (*p == '/') {
+                       *p = 0;
+                       if (tmp[strlen(tmp) - 1] == '.' &&
+                                       tmp[strlen(tmp) - 2] == '.' &&
+                                       tmp[strlen(tmp) - 3] == '/') {
+                               ERR("Using '/../' is not permitted in the trace path (%s)",
+                                               tmp);
+                               ret = -1;
+                               goto error;
+                       }
+                       ret = stat(tmp, &statbuf);
+                       if (ret < 0) {
+                               ret = mkdir(tmp, mode);
+                               if (ret < 0) {
+                                       if (errno != EEXIST) {
+                                               PERROR("mkdir recursive");
+                                               ret = -errno;
+                                               goto error;
+                                       }
+                               }
+                       }
+                       *p = '/';
+               }
+       }
+
+       ret = mkdir(tmp, mode);
+       if (ret < 0) {
+               if (errno != EEXIST) {
+                       PERROR("mkdir recursive last piece");
+                       ret = -errno;
+               } else {
+                       ret = 0;
+               }
+       }
+
+error:
+       return ret;
+}