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fs_ops: fix mtime update of regular files

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Explicit mtime update (e.g., via futimens(2)) should override
file handle mtime.
This commit is contained in:
CismonX 2025-06-07 19:55:27 +08:00
parent 72b9e200d9
commit 5082e7c67c
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GPG key ID: 3094873E29A482FB
1 changed files with 27 additions and 14 deletions
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41
src/fs_ops.c
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@ -68,6 +68,8 @@
#define FH_FLAG_DIRTY ( 1u << 0 )
#define FH_FLAG_FSCK ( 1u << 1 )
#define FH_FLAG_ISDIR ( 1u << 2 )
#define FH_FLAG_MTIME ( 1u << 3 )
#define SUBSYS_ID_BITS ( 64 - BOOKMARKFS_BOOKMARK_TYPE_BITS )
#define SUBSYS_ID_MASK ( ((fuse_ino_t)1 << SUBSYS_ID_BITS) - 1 )
@ -313,6 +315,7 @@ inval_dir (
if (ctx.flags.readonly || !ctx.flags.exclusive) {
return 0;
}
debug_assert(fh->flags & FH_FLAG_ISDIR);
if (fh->flags & FH_FLAG_DIRTY) {
if (0 != inval_inode(ino)) {
return -EIO;
@ -436,6 +439,7 @@ bm_do_write (
if (fh == NULL || !(fh->flags & FH_FLAG_DIRTY)) {
return 0;
}
debug_assert(!(fh->flags & FH_FLAG_ISDIR));
size_t data_len = fh->data_len;
if (ctx.flags.eol && fh->buf[data_len - 1] == '\n') {
@ -447,16 +451,17 @@ bm_do_write (
return status;
}
struct timespec const times[2] = {
[1] = fh->mtime,
};
uint32_t set_flags = BOOKMARK_FLAG(SET_MTIME);
status = BACKEND_CALL(bookmark_set, id, NULL, set_flags, times, 0);
if (status < 0) {
return status;
if (fh->flags & FH_FLAG_MTIME) {
struct timespec const times[2] = {
[1] = fh->mtime,
};
uint32_t set_flags = BOOKMARK_FLAG(SET_MTIME);
status = BACKEND_CALL(bookmark_set, id, NULL, set_flags, times, 0);
if (status < 0) {
return status;
}
}
fh->flags &= ~FH_FLAG_DIRTY;
fh->flags &= ~(FH_FLAG_DIRTY | FH_FLAG_MTIME);
return 0;
}
@ -530,7 +535,7 @@ bm_fillstat (
return;
}
struct fs_file_handle *fh = bm_fh_get(ino, NULL, NULL);
if (fh == NULL || !(fh->flags & FH_FLAG_DIRTY)) {
if (fh == NULL || !(fh->flags & FH_FLAG_MTIME)) {
return;
}
// If file content changes locally, remote mtime no longer matters,
@ -803,7 +808,7 @@ bm_open (
if ((flags & O_ACCMODE) != O_RDONLY) {
fh->data_len = 0;
xgetrealtime(&fh->mtime);
fh->flags |= FH_FLAG_DIRTY;
fh->flags |= (FH_FLAG_DIRTY | FH_FLAG_MTIME);
}
}
@ -836,7 +841,9 @@ bm_opendir (
return status;
}
bm_fh_new(ino);
struct fs_file_handle *fh = bm_fh_new(ino);
fh->flags |= FH_FLAG_ISDIR;
// Do not cache tag and keyword dents, since a bookmark
// delete or rename may have a side effect of changing them.
switch (flags & BOOKMARKFS_BOOKMARK_TYPE_MASK) {
@ -1076,6 +1083,7 @@ bm_setattr (
struct fs_file_handle *fh = uint2ptr(fi->fh);
debug_assert(fh == bm_fh_get(ino, NULL, NULL));
debug_assert(!(fh->flags & FH_FLAG_ISDIR));
size_t new_len = stat_buf->st_size;
if (new_len > ctx.file_max) {
@ -1090,7 +1098,7 @@ bm_setattr (
}
fh->data_len = new_len;
xgetrealtime(&fh->mtime);
fh->flags |= FH_FLAG_DIRTY;
fh->flags |= (FH_FLAG_DIRTY | FH_FLAG_MTIME);
}
if (mask & (TO_SET(ATIME, MTIME))) {
@ -1119,6 +1127,11 @@ bm_setattr (
times[1] = stat_buf->st_mtim;
}
set_flags |= BOOKMARK_FLAG(SET_MTIME);
struct fs_file_handle *fh = bm_fh_get(ino, NULL, NULL);
if (fh != NULL && !(fh->flags & FH_FLAG_ISDIR)) {
fh->flags &= ~FH_FLAG_MTIME;
}
}
int status = BACKEND_CALL(bookmark_set, INODE_SUBSYS_ID(ino), NULL,
set_flags, times, 0);
@ -1199,7 +1212,7 @@ bm_write (
xgetrealtime(&fh->mtime);
// We're tempted to free the cookie here, however,
// that would make a read following a writeback always realloc the buffer.
fh->flags |= FH_FLAG_DIRTY;
fh->flags |= (FH_FLAG_DIRTY | FH_FLAG_MTIME);
return send_reply(write, req, req_buf_len);
}