This command aims to implement an easy way to check a filesystem for the
existence of 64bit inodes.
Based on XFS_IOC_FSINUMBERS, and starting with a lastip = 0xffffffff
instead of 0.
For now, it just returns a string saying there is or there is no 64bit inodes
in the filesystem, but, I was wondering if it might not be better to just return
0 or 1, so it can be used inside scripts to check for that. Or maybe an argument
to chose between an integer output or a string verbose output.
Also, I was wondering if might be useful to, besides return the existence of
64bit inodes, also inform if there is any 64bit inodes allocated in the groups
or not. Although, this will need the tool to walk through all the inode groups
checking for allocated inodes or not, instead of just stop at the first 64bit
inode found.
Also, I'm still not sure if 'inodes64' is a good name for the command, I was
also thinking about something like 'chk64inos' but 'inodes64' was the best and
easy to be remembered I could find.
Comments are appreciated :-)
Signed-off-by: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
---
io/open.c | 39 +++++++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/io/open.c b/io/open.c
index ac5a5e0..3a98fdf 100644
--- a/io/open.c
+++ b/io/open.c
@@ -44,6 +44,7 @@ static cmdinfo_t statfs_cmd;
static cmdinfo_t chproj_cmd;
static cmdinfo_t lsproj_cmd;
static cmdinfo_t extsize_cmd;
+static cmdinfo_t inodes64_cmd;
static prid_t prid;
static long extsize;
@@ -750,6 +751,37 @@ statfs_f(
return 0;
}
+static int
+inodes64_f(
+ int argc,
+ char **argv)
+{
+ int i;
+ __s32 count;
+ __u64 last = 0xffffffff;
+ xfs_inogrp_t igroup[64];
+ xfs_fsop_bulkreq_t bulkreq;
+
+ /* Setup bulkreq structure */
+ bulkreq.lastip = &last;
+ bulkreq.icount = 64;
+ bulkreq.ubuffer = &igroup;
+ bulkreq.ocount = &count;
+
+ while (xfsctl(file->name, file->fd, XFS_IOC_FSINUMBERS, &bulkreq) == 0) {
+ if (count > 0) {
+ printf("Filesystem does have 64bit inodes\n");
+ return 0;
+ } else {
+ printf("Filesystem does not have 64bit inodes\n");
+ return 0;
+ }
+ }
+ perror("xfsctl(XFS_IOC_FSINUMBERS)");
+ exitcode = 1;
+ return 0;
+}
+
void
open_init(void)
{
@@ -815,6 +847,12 @@ open_init(void)
_("get/set preferred extent size (in bytes) for the open file");
extsize_cmd.help = extsize_help;
+ inodes64_cmd.name = "inodes64";
+ inodes64_cmd.cfunc = inodes64_f;
+ inodes64_cmd.flags = CMD_NOMAP_OK;
+ inodes64_cmd.oneline =
+ _("Checks if filesyste contais 64bit inodes");
+
add_command(&open_cmd);
add_command(&stat_cmd);
add_command(&close_cmd);
@@ -822,4 +860,5 @@ open_init(void)
add_command(&chproj_cmd);
add_command(&lsproj_cmd);
add_command(&extsize_cmd);
+ add_command(&inodes64_cmd);
}
--
2.4.3
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