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Reduce the amount of stack space needed by fat_rename and mkdir_uncached.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28576 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sparmann 2010-11-13 15:41:18 +00:00
parent 47bbd6a466
commit 79d26ed7f9
2 changed files with 29 additions and 16 deletions
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20
firmware/drivers/fat.c
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@ -1967,7 +1967,7 @@ int fat_rename(struct fat_file* file,
int attr)
{
int rc;
struct fat_dir olddir;
struct fat_file olddir_file;
struct fat_file newfile = *file;
unsigned char* entry = NULL;
unsigned short* clusptr = NULL;
@ -1988,11 +1988,6 @@ int fat_rename(struct fat_file* file,
return -2;
}
/* create a temporary file handle */
rc = fat_opendir(IF_MV2(file->volume,) &olddir, file->dircluster, NULL);
if (rc < 0)
return rc * 10 - 1;
/* create new name */
rc = add_dir_entry(dir, &newfile, newname, false, false);
if (rc < 0)
@ -2016,18 +2011,17 @@ int fat_rename(struct fat_file* file,
it points to its parent directory (we don't check if it was a move) */
if(FAT_ATTR_DIRECTORY == attr) {
unsigned char buf[SECTOR_SIZE];
/* open the dir that was renamed, we re-use the olddir struct */
rc = fat_opendir(IF_MV2(file->volume,) &olddir, newfile.firstcluster,
NULL);
/* open the dir that was renamed, we re-use the olddir_file struct */
rc = fat_open(IF_MV2(volume,) newfile.firstcluster, &olddir_file, NULL);
if (rc < 0)
return rc * 10 - 6;
/* get the first sector of the dir */
rc = fat_seek(&olddir.file, 0);
rc = fat_seek(&olddir_file, 0);
if (rc < 0)
return rc * 10 - 7;
rc = fat_readwrite(&olddir.file, 1, buf, false);
rc = fat_readwrite(&olddir_file, 1, buf, false);
if (rc < 0)
return rc * 10 - 8;
@ -2051,11 +2045,11 @@ int fat_rename(struct fat_file* file,
*clusptr = htole16(parentcluster & 0xffff);
/* write back this sector */
rc = fat_seek(&olddir.file, 0);
rc = fat_seek(&olddir_file, 0);
if (rc < 0)
return rc * 10 - 7;
rc = fat_readwrite(&olddir.file, 1, buf, true);
rc = fat_readwrite(&olddir_file, 1, buf, true);
if (rc < 1)
return rc * 10 - 8;
}