lib: libc: stdio: add support remove api

Implement remove api to zephyr's native c library

Signed-off-by: Karthikeyan Krishnasamy <[email protected]>

Author: karthi012

lib/libc/common/CMakeLists.txt

@@ -19,6 +19,7 @@ zephyr_library_sources_ifdef(CONFIG_COMMON_LIBC_THRD
     source/thrd/thrd.c
     source/thrd/tss.c
     )
+zephyr_library_sources_ifdef(CONFIG_COMMON_LIBC_REMOVE source/stdio/remove.c)
 
 # Prevent compiler from optimizing calloc into an infinite recursive call
 zephyr_library_compile_options($<TARGET_PROPERTY:compiler,no_builtin_malloc>)

lib/libc/common/Kconfig

@@ -115,3 +115,10 @@ config COMMON_LIBC_THRD
 	default y
 	help
 	  Common implementation of C11 <threads.h> API.
+
+config COMMON_LIBC_REMOVE
+	bool "Common C library remove"
+	depends on !SEMIHOST
+	default y if FILE_SYSTEM
+	help
+	  Common implementation of remove().

lib/libc/common/source/stdio/remove.c

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2024 Linumiz.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <zephyr/fs/fs.h>
+#include <zephyr/sys/util_macro.h>
+
+/**
+ *
+ * @brief deletes a name from the filesystem
+ *
+ * @return On success, zero is returned. On error, -1 is returned
+ * and errno is set to indicate the error.
+ */
+
+int remove(const char *path)
+{
+	if (!IS_ENABLED(CONFIG_FILE_SYSTEM)) {
+		errno = ENOTSUP;
+		return -1;
+	}
+
+	int ret = fs_unlink(path);
+
+	if (ret < 0) {
+		errno = -ret;
+		return -1;
+	}
+
+	return 0;
+}

lib/libc/minimal/include/stdio.h

@@ -60,6 +60,7 @@ int fputc(int c, FILE *stream);
 int fputs(const char *ZRESTRICT s, FILE *ZRESTRICT stream);
 size_t fwrite(const void *ZRESTRICT ptr, size_t size, size_t nitems,
 	      FILE *ZRESTRICT stream);
+int remove(const char *path);
 #define putc(c, stream) fputc(c, stream)
 #define putchar(c) putc(c, stdout)