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author | James Buren <braewoods+rb@braewoods.net> | 2021-07-07 21:06:31 +0000 |
---|---|---|
committer | Solomon Peachy <pizza@shaftnet.org> | 2021-07-08 13:15:30 +0000 |
commit | c174d3a544b92be55bc0d09443522386363129f5 (patch) | |
tree | c0462544de28dff56285a55ff2824daee06c0f34 /firmware/drivers/fat.c | |
parent | e6ee3dd17cf040cf38c8751c99edaec67f7a5ab5 (diff) | |
download | rockbox-c174d3a544b92be55bc0d09443522386363129f5.tar.gz rockbox-c174d3a544b92be55bc0d09443522386363129f5.zip |
file/fat: add utime function
This emulates the traditional utime function from UNIX clones to allow
for manual updates of the modification timestamp on files and directories.
This should only prove useful for non-native targets as those usually
have a libc version of utime.
Change-Id: Iea8a1d328e78b92c400d3354ee80689c7cf53af8
Diffstat (limited to 'firmware/drivers/fat.c')
-rw-r--r-- | firmware/drivers/fat.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/firmware/drivers/fat.c b/firmware/drivers/fat.c index cc9735d0f7..28d4eb1987 100644 --- a/firmware/drivers/fat.c +++ b/firmware/drivers/fat.c | |||
@@ -2276,6 +2276,41 @@ fat_error: | |||
2276 | return rc; | 2276 | return rc; |
2277 | } | 2277 | } |
2278 | 2278 | ||
2279 | int fat_utime(struct fat_file *parent, struct fat_file *file, | ||
2280 | const struct utimbuf *times) | ||
2281 | { | ||
2282 | struct bpb * const fat_bpb = FAT_BPB(parent->volume); | ||
2283 | |||
2284 | if (!fat_bpb) | ||
2285 | return -1; | ||
2286 | |||
2287 | int rc; | ||
2288 | |||
2289 | struct fat_filestr parentstr; | ||
2290 | fat_filestr_init(&parentstr, parent); | ||
2291 | |||
2292 | dc_lock_cache(); | ||
2293 | |||
2294 | union raw_dirent *ent = cache_direntry(fat_bpb, &parentstr, file->e.entry); | ||
2295 | if (!ent) | ||
2296 | FAT_ERROR(-2); | ||
2297 | |||
2298 | uint16_t date; | ||
2299 | uint16_t time; | ||
2300 | dostime_localtime(times->modtime, &date, &time); | ||
2301 | |||
2302 | ent->wrttime = htole16(time); | ||
2303 | ent->wrtdate = htole16(date); | ||
2304 | ent->lstaccdate = htole16(date); | ||
2305 | |||
2306 | dc_dirty_buf(ent); | ||
2307 | |||
2308 | rc = 0; | ||
2309 | fat_error: | ||
2310 | dc_unlock_cache(); | ||
2311 | cache_commit(fat_bpb); | ||
2312 | return rc; | ||
2313 | } | ||
2279 | 2314 | ||
2280 | /** File stream functions **/ | 2315 | /** File stream functions **/ |
2281 | 2316 | ||