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implement relatime and make it default (Yura Pakhuchiy, Valerie Henson, Szaka)

master
szaka 2007-11-18 15:04:39 +00:00
parent 008cac84fb
commit 08128a051f
2 changed files with 62 additions and 5 deletions
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26
src/ntfs-3g.8.in
View File

@ -99,7 +99,8 @@ present. The value is given in octal. The default value is 0 which
means full access to everybody.
.TP
.B ro
Mount filesystem read\-only.
Mount filesystem read\-only. Useful if Windows is hibernated or the
NTFS journal file is unclean.
.TP
.BI locale= value
This option can be useful if your language specific locale environment
@ -113,6 +114,29 @@ Force the mounting even if the NTFS logfile is unclean. The logfile
will be unconditionally cleared. Use this option with caution and for
your own responsibility.
.TP
.B atime, noatime, relatime
The
.B atime
option updates inode access time for each access.
The
.B noatime
option disables inode access time updates which can speed up
file operations and prevent sleeping (notebook) disks spinning
up too often thus saving energy and disk lifetime.
The
.B relatime
option is very similar to
.B noatime.
It updates inode access times relative to modify or change time.
The access time is only updated if the previous access time was earlier
than the current modify or change time. Unlike
.B noatime
this option doesn't break applications that need to know
if a file has been read since the last time it was modified.
This is the default behaviour.
.TP
.B show_sys_files
Show the system files in directory listings.
Otherwise the default behaviour is to hide the system files.

41
src/ntfs-3g.c
View File

@ -92,6 +92,12 @@ typedef enum {
FSTYPE_FUSEBLK
} fuse_fstype;
typedef enum {
ATIME_ENABLED,
ATIME_DISABLED,
ATIME_RELATIVE
} ntfs_atime_t;
typedef struct {
fuse_fill_dir_t filler;
void *buf;
@ -110,12 +116,12 @@ typedef struct {
unsigned int fmask;
unsigned int dmask;
ntfs_fuse_streams_interface streams;
ntfs_atime_t atime;
BOOL ro;
BOOL show_sys_files;
BOOL silent;
BOOL force;
BOOL debug;
BOOL noatime;
BOOL no_detach;
BOOL blkdev;
BOOL mounted;
@ -170,8 +176,12 @@ static int ntfs_fuse_is_named_data_stream(const char *path)
static void ntfs_fuse_update_times(ntfs_inode *ni, ntfs_time_update_flags mask)
{
if (ctx->noatime)
if (ctx->atime == ATIME_DISABLED)
mask &= ~NTFS_UPDATE_ATIME;
else if (ctx->atime == ATIME_RELATIVE && mask == NTFS_UPDATE_ATIME &&
ni->last_access_time >= ni->last_data_change_time &&
ni->last_access_time >= ni->last_mft_change_time)
return;
ntfs_inode_update_times(ni, mask);
}
@ -1676,6 +1686,8 @@ static char *parse_mount_options(const char *orig_opts)
ctx->silent = TRUE;
ctx->atime = ATIME_RELATIVE;
s = options;
while (s && *s && (val = strsep(&s, ","))) {
opt = strsep(&val, "=");
@ -1693,8 +1705,21 @@ static char *parse_mount_options(const char *orig_opts)
"have value.\n");
goto err_exit;
}
ctx->noatime = TRUE;
strcat(ret, "noatime,");
ctx->atime = ATIME_DISABLED;
} else if (!strcmp(opt, "atime")) {
if (val) {
ntfs_log_error("'atime' option should not "
"have value.\n");
goto err_exit;
}
ctx->atime = ATIME_ENABLED;
} else if (!strcmp(opt, "relatime")) {
if (val) {
ntfs_log_error("'relatime' option should not "
"have value.\n");
goto err_exit;
}
ctx->atime = ATIME_RELATIVE;
} else if (!strcmp(opt, "fake_rw")) {
if (val) {
ntfs_log_error("'fake_rw' option should not "
@ -1847,6 +1872,14 @@ static char *parse_mount_options(const char *orig_opts)
strcat(ret, def_opts);
if (default_permissions)
strcat(ret, "default_permissions,");
if (ctx->atime == ATIME_RELATIVE)
strcat(ret, "relatime,");
else if (ctx->atime == ATIME_ENABLED)
strcat(ret, "atime,");
else
strcat(ret, "noatime,");
strcat(ret, "fsname=");
strcat(ret, opts.device);
exit: