arne/openwrt
1
0
Fork 0
forked from mirror/openwrt
Code Pull requests Activity

ucode: add fs.mkdtemp function

Browse source 
Useful for creating temporary directories

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2025-10-10 14:19:58 +02:00
parent f4d7eee8e0
commit 255d999783
1 changed files with 107 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

107
package/utils/ucode/patches/122-fs-add-mkdtemp-method-for-creating-temporary-directo.patch Normal file
View file

@ -0,0 +1,107 @@
From: Felix Fietkau <nbd@nbd.name>
Date: Thu, 9 Oct 2025 14:11:55 +0200
Subject: [PATCH] fs: add mkdtemp() method for creating temporary directories
Returns the directory path as a string, following the same template
handling pattern as mkstemp().
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/lib/fs.c
+++ b/lib/fs.c
@@ -2632,6 +2632,86 @@ uc_fs_mkstemp(uc_vm_t *vm, size_t nargs)
}
/**
+ * Creates a unique temporary directory based on the given template.
+ *
+ * If the template argument is given and contains a relative path, the created
+ * directory will be placed relative to the current working directory.
+ *
+ * If the template argument is given and contains an absolute path, the created
+ * directory will be placed relative to the given directory.
+ *
+ * If the template argument is given but does not contain a directory separator,
+ * the directory will be placed in `/tmp/`.
+ *
+ * If no template argument is given, the default `/tmp/XXXXXX` is used.
+ *
+ * The template argument must end with six consecutive X characters (`XXXXXX`),
+ * which will be replaced with a random string to create the unique directory name.
+ * If the template does not end with `XXXXXX`, it will be automatically appended.
+ *
+ * Returns a string containing the path of the created directory on success.
+ *
+ * Returns `null` if an error occurred, e.g. on insufficient permissions or
+ * inaccessible directory.
+ *
+ * @function module:fs#mkdtemp
+ *
+ * @param {string} [template="/tmp/XXXXXX"]
+ * The path template to use when forming the temporary directory name.
+ *
+ * @returns {?string}
+ *
+ * @example
+ * // Create a unique temporary directory in the current working directory
+ * const tempDir = mkdtemp('./data-XXXXXX');
+ */
+static uc_value_t *
+uc_fs_mkdtemp(uc_vm_t *vm, size_t nargs)
+{
+ uc_value_t *template = uc_fn_arg(0);
+ bool ends_with_template = false;
+ char *path, *t, *result;
+ uc_value_t *rv;
+ size_t l;
+
+ if (template && ucv_type(template) != UC_STRING)
+ err_return(EINVAL);
+
+ t = ucv_string_get(template);
+ l = ucv_string_length(template);
+
+ ends_with_template = (l >= 6 && strcmp(&t[l - 6], "XXXXXX") == 0);
+
+ if (t && strchr(t, '/')) {
+ if (ends_with_template)
+ xasprintf(&path, "%s", t);
+ else
+ xasprintf(&path, "%s.XXXXXX", t);
+ }
+ else if (t) {
+ if (ends_with_template)
+ xasprintf(&path, "/tmp/%s", t);
+ else
+ xasprintf(&path, "/tmp/%s.XXXXXX", t);
+ }
+ else {
+ xasprintf(&path, "/tmp/XXXXXX");
+ }
+
+ result = mkdtemp(path);
+
+ if (!result) {
+ free(path);
+ err_return(errno);
+ }
+
+ rv = ucv_string_new(result);
+ free(path);
+
+ return rv;
+}
+
+/**
* Checks the accessibility of a file or directory.
*
* The optional modes argument specifies the access modes which should be
@@ -3065,6 +3145,7 @@ static const uc_function_list_t global_f
{ "basename", uc_fs_basename },
{ "lsdir", uc_fs_lsdir },
{ "mkstemp", uc_fs_mkstemp },
+ { "mkdtemp", uc_fs_mkdtemp },
{ "access", uc_fs_access },
{ "readfile", uc_fs_readfile },
{ "writefile", uc_fs_writefile },