[PATCH 1/4] fs: fat: usage basename in file_fat_write_at, fat_mkdir

[Heinrich Schuchardt <xypron.glpk@gmx.de>]

This patch involves no functional change. It is just about code
readability.

Both in file_fat_write_at() and fat_mkdir() the incoming file or directory
path are split into two parts: the parent directory and the base name.

In file_fat_write_at() the value of the variable basename is assigned to
the filename parameter and afterwards the variable filename is used instead
of basename. It is more readable to use the variable basename and leave
filename unchanged.

In fat_mkdir() the base name variable is called directory. This is
confusing. Call it basename like in file_fat_write_at(). This allows to
rename parameter new_directory to directory in the implementation of
fat_mkdir() to match the function declaration.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
 fs/fat/fat_write.c | 27 +++++++++++++--------------
 1 file changed, 13 insertions(+), 14 deletions(-)

diff --git a/fs/fat/fat_write.c b/fs/fat/fat_write.c
index b43a27b205..a9b9fa5d68 100644
--- a/fs/fat/fat_write.c
+++ b/fs/fat/fat_write.c
@@ -1299,9 +1299,8 @@ int file_fat_write_at(const char *filename, loff_t pos, void *buffer,
 		goto exit;
 	}

-	filename = basename;
-	if (normalize_longname(l_filename, filename)) {
-		printf("FAT: illegal filename (%s)\n", filename);
+	if (normalize_longname(l_filename, basename)) {
+		printf("FAT: illegal filename (%s)\n", basename);
 		ret = -EINVAL;
 		goto exit;
 	}
@@ -1365,7 +1364,7 @@ int file_fat_write_at(const char *filename, loff_t pos, void *buffer,
 		}

 		/* Check if long name is needed */
-		ndent = set_name(itr, filename, shortname);
+		ndent = set_name(itr, basename, shortname);
 		if (ndent < 0) {
 			ret = ndent;
 			goto exit;
@@ -1375,7 +1374,7 @@ int file_fat_write_at(const char *filename, loff_t pos, void *buffer,
 			goto exit;
 		if (ndent > 1) {
 			/* Set long name entries */
-			ret = fill_dir_slot(itr, filename, shortname);
+			ret = fill_dir_slot(itr, basename, shortname);
 			if (ret)
 				goto exit;
 		}
@@ -1611,31 +1610,31 @@ exit:
 	return ret;
 }

-int fat_mkdir(const char *new_dirname)
+int fat_mkdir(const char *dirname)
 {
 	dir_entry *retdent;
 	fsdata datablock = { .fatbuf = NULL, };
 	fsdata *mydata = &datablock;
 	fat_itr *itr = NULL;
-	char *dirname_copy, *parent, *dirname;
+	char *dirname_copy, *parent, *basename;
 	char l_dirname[VFAT_MAXLEN_BYTES];
 	int ret = -1;
 	loff_t actwrite;
 	unsigned int bytesperclust;
 	dir_entry *dotdent = NULL;

-	dirname_copy = strdup(new_dirname);
+	dirname_copy = strdup(dirname);
 	if (!dirname_copy)
 		goto exit;

-	split_filename(dirname_copy, &parent, &dirname);
-	if (!strlen(dirname)) {
+	split_filename(dirname_copy, &parent, &basename);
+	if (!strlen(basename)) {
 		ret = -EINVAL;
 		goto exit;
 	}

-	if (normalize_longname(l_dirname, dirname)) {
-		printf("FAT: illegal filename (%s)\n", dirname);
+	if (normalize_longname(l_dirname, basename)) {
+		printf("FAT: illegal filename (%s)\n", basename);
 		ret = -EINVAL;
 		goto exit;
 	}
@@ -1678,7 +1677,7 @@ int fat_mkdir(const char *new_dirname)
 		}

 		/* Check if long name is needed */
-		ndent = set_name(itr, dirname, shortname);
+		ndent = set_name(itr, basename, shortname);
 		if (ndent < 0) {
 			ret = ndent;
 			goto exit;
@@ -1688,7 +1687,7 @@ int fat_mkdir(const char *new_dirname)
 			goto exit;
 		if (ndent > 1) {
 			/* Set long name entries */
-			ret = fill_dir_slot(itr, dirname, shortname);
+			ret = fill_dir_slot(itr, basename, shortname);
 			if (ret)
 				goto exit;
 		}
--
2.29.2