file_util: Add file_is_symlink function

This function should be pretty self explanatory

Signed-off-by: Paul Barker <paul@paulbarker.me.uk>

2 files changed, 12 insertions, 0 deletions

diff --git a/libopkg/file_util.c b/libopkg/file_util.c
index 897546e..82578bd 100644
--- a/libopkg/file_util.c
+++ b/libopkg/file_util.c
@@ -55,6 +55,17 @@ file_is_dir(const char *file_name)
 	return S_ISDIR(st.st_mode);
 }
 
+int
+file_is_symlink(const char *file_name)
+{
+	struct stat st;
+
+	if (lstat(file_name, &st) == -1)
+		return 0;
+
+	return S_ISLNK(st.st_mode);
+}
+
 /* read a single line from a file, stopping at a newline or EOF.
    If a newline is read, it will appear in the resulting string.
    Return value is a malloc'ed char * which should be freed at
diff --git a/libopkg/file_util.h b/libopkg/file_util.h
index d4ae05f..f4a9b75 100644
--- a/libopkg/file_util.h
+++ b/libopkg/file_util.h
@@ -24,6 +24,7 @@ extern "C" {
 
 int file_exists(const char *file_name);
 int file_is_dir(const char *file_name);
+int file_is_symlink(const char *file_name);
 char *file_read_line_alloc(FILE *file);
 int file_move(const char *src, const char *dest);
 int file_copy(const char *src, const char *dest);