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Implemented and tested lfsr_file_truncate

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Not much to say here. We need to modify trees a bit, but at least it's
relatively straightforward.
This commit is contained in:
Christopher Haster
2023-09-29 00:58:29 -05:00
parent 981e64f524
commit 5adc1f54b7
3 changed files with 568 additions and 87 deletions
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lfs.h
+15 -1
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@@ -785,10 +785,24 @@ lfs_soff_t lfsr_file_seek(lfs_t *lfs, lfsr_file_t *file,
lfs_soff_t off, uint8_t whence);
#ifndef LFS_READONLY
// Truncates the size of the file to the specified size
// Truncate/grow the size of the file to the specified size
//
// If size is larger than the current file size, a hole is created, appearing
// as if the file was filled with zeros.
//
// Returns a negative error code on failure.
int lfs_file_truncate(lfs_t *lfs, lfs_file_t *file, lfs_off_t size);
int lfsr_file_truncate(lfs_t *lfs, lfsr_file_t *file, lfs_off_t size);
#endif
#ifndef LFS_READONLY
// Truncate/grow the file, but from the front
//
// If size is larger than the current file size, a hole is created, appearing
// as if the file was filled with zeros.
//
// Returns a negative error code on failure.
int lfsr_file_fruncate(lfs_t *lfs, lfsr_file_t *file, lfs_off_t size);
#endif
// Return the position of the file