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Fixed issue where seeking to end-of-directory return LFS_ERR_INVAL

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This was just an oversight. Seeking to the end of the directory should
not error, but instead restore the directory to the state where the next
read returns 0.

Note this matches the behavior of lfs_file_tell/lfs_file_seek.

Found by sosthene-nitrokey
This commit is contained in:
Christopher Haster 2023-04-18 14:56:46 -05:00
parent 384a498762
commit b33a5b3f85
1 changed files with 5 additions and 5 deletions
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10
lfs.c
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@ -2595,11 +2595,6 @@ static int lfs_dir_rawseek(lfs_t *lfs, lfs_dir_t *dir, lfs_off_t off) {
dir->id = (off > 0 && lfs_pair_cmp(dir->head, lfs->root) == 0);
while (off > 0) {
int diff = lfs_min(dir->m.count - dir->id, off);
dir->id += diff;
dir->pos += diff;
off -= diff;
if (dir->id == dir->m.count) {
if (!dir->m.split) {
return LFS_ERR_INVAL;
@ -2612,6 +2607,11 @@ static int lfs_dir_rawseek(lfs_t *lfs, lfs_dir_t *dir, lfs_off_t off) {
dir->id = 0;
}
int diff = lfs_min(dir->m.count - dir->id, off);
dir->id += diff;
dir->pos += diff;
off -= diff;
}
return 0;