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Add 'show tmpfs' ddb command

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Reviewed by:	markj
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D37097
This commit is contained in:
Konstantin Belousov 2022-10-20 17:30:00 +03:00
parent e77f2f9dc6
commit 83aff0f08c
1 changed files with 42 additions and 0 deletions
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42
sys/fs/tmpfs/tmpfs_vfsops.c
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@ -43,6 +43,7 @@
* allocate and release resources.
*/
#include "opt_ddb.h"
#include "opt_tmpfs.h"
#include <sys/cdefs.h>
@ -696,3 +697,44 @@ struct vfsops tmpfs_vfsops = {
.vfs_uninit = tmpfs_uninit,
};
VFS_SET(tmpfs_vfsops, tmpfs, VFCF_JAIL);
#ifdef DDB
#include <ddb/ddb.h>
static void
db_print_tmpfs(struct mount *mp, struct tmpfs_mount *tmp)
{
db_printf("mp %p (%s) tmp %p\n", mp,
mp->mnt_stat.f_mntonname, tmp);
db_printf(
"\tsize max %ju pages max %lu pages used %lu\n"
"\tinodes max %ju inodes inuse %ju refcount %ju\n"
"\tmaxfilesize %ju r%c %snamecache %smtime\n",
(uintmax_t)tmp->tm_size_max, tmp->tm_pages_max, tmp->tm_pages_used,
(uintmax_t)tmp->tm_nodes_max, (uintmax_t)tmp->tm_nodes_inuse,
(uintmax_t)tmp->tm_refcount, (uintmax_t)tmp->tm_maxfilesize,
tmp->tm_ronly ? 'o' : 'w', tmp->tm_nonc ? "no" : "",
tmp->tm_nomtime ? "no" : "");
}
DB_SHOW_COMMAND(tmpfs, db_show_tmpfs)
{
struct mount *mp;
struct tmpfs_mount *tmp;
if (have_addr) {
mp = (struct mount *)addr;
tmp = VFS_TO_TMPFS(mp);
db_print_tmpfs(mp, tmp);
return;
}
TAILQ_FOREACH(mp, &mountlist, mnt_list) {
if (strcmp(mp->mnt_stat.f_fstypename, tmpfs_vfsconf.vfc_name) ==
0) {
tmp = VFS_TO_TMPFS(mp);
db_print_tmpfs(mp, tmp);
}
}
}
#endif /* DDB */