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author | pjd <pjd@FreeBSD.org> | 2008-04-26 13:04:48 +0000 |
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committer | pjd <pjd@FreeBSD.org> | 2008-04-26 13:04:48 +0000 |
commit | cb7610bd5214be1b0977bd2b83d8e95686c8881b (patch) | |
tree | 1377a03f1710eda31a3481e43335f03806905d5f /sys/kern | |
parent | b568c603bca1654ac7c49781b351b81b6c9414c5 (diff) | |
download | FreeBSD-src-cb7610bd5214be1b0977bd2b83d8e95686c8881b.zip FreeBSD-src-cb7610bd5214be1b0977bd2b83d8e95686c8881b.tar.gz |
Implement 'show mount' command in DDB. Without argument, it prints short
info about all currently mounted file systems. When an address is given
as an argument, prints detailed info about the given mount point.
MFC after: 2 weeks
Diffstat (limited to 'sys/kern')
-rw-r--r-- | sys/kern/vfs_subr.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c index 9316dcf..3116ca9 100644 --- a/sys/kern/vfs_subr.c +++ b/sys/kern/vfs_subr.c @@ -2698,6 +2698,158 @@ DB_SHOW_COMMAND(vnode, db_show_vnode) vp = (struct vnode *)addr; vn_printf(vp, "vnode "); } + +/* + * Show details about the given mount point. + */ +DB_SHOW_COMMAND(mount, db_show_mount) +{ + struct mount *mp; + struct statfs *sp; + struct vnode *vp; + char buf[512]; + u_int flags; + + if (!have_addr) { + /* No address given, print short info about all mount points. */ + TAILQ_FOREACH(mp, &mountlist, mnt_list) { + db_printf("%p %s on %s (%s)\n", mp, + mp->mnt_stat.f_mntfromname, + mp->mnt_stat.f_mntonname, + mp->mnt_stat.f_fstypename); + } + db_printf("\nMore info: show mount <addr>\n"); + return; + } + + mp = (struct mount *)addr; + db_printf("%p %s on %s (%s)\n", mp, mp->mnt_stat.f_mntfromname, + mp->mnt_stat.f_mntonname, mp->mnt_stat.f_fstypename); + + buf[0] = '\0'; + flags = mp->mnt_flag; +#define MNT_FLAG(flag) do { \ + if (flags & (flag)) { \ + if (buf[0] != '\0') \ + strlcat(buf, ", ", sizeof(buf)); \ + strlcat(buf, (#flag) + 4, sizeof(buf)); \ + flags &= ~(flag); \ + } \ +} while (0) + MNT_FLAG(MNT_RDONLY); + MNT_FLAG(MNT_SYNCHRONOUS); + MNT_FLAG(MNT_NOEXEC); + MNT_FLAG(MNT_NOSUID); + MNT_FLAG(MNT_UNION); + MNT_FLAG(MNT_ASYNC); + MNT_FLAG(MNT_SUIDDIR); + MNT_FLAG(MNT_SOFTDEP); + MNT_FLAG(MNT_NOSYMFOLLOW); + MNT_FLAG(MNT_GJOURNAL); + MNT_FLAG(MNT_MULTILABEL); + MNT_FLAG(MNT_ACLS); + MNT_FLAG(MNT_NOATIME); + MNT_FLAG(MNT_NOCLUSTERR); + MNT_FLAG(MNT_NOCLUSTERW); + MNT_FLAG(MNT_EXRDONLY); + MNT_FLAG(MNT_EXPORTED); + MNT_FLAG(MNT_DEFEXPORTED); + MNT_FLAG(MNT_EXPORTANON); + MNT_FLAG(MNT_EXKERB); + MNT_FLAG(MNT_EXPUBLIC); + MNT_FLAG(MNT_LOCAL); + MNT_FLAG(MNT_QUOTA); + MNT_FLAG(MNT_ROOTFS); + MNT_FLAG(MNT_USER); + MNT_FLAG(MNT_IGNORE); + MNT_FLAG(MNT_UPDATE); + MNT_FLAG(MNT_DELEXPORT); + MNT_FLAG(MNT_RELOAD); + MNT_FLAG(MNT_FORCE); + MNT_FLAG(MNT_SNAPSHOT); + MNT_FLAG(MNT_BYFSID); +#undef MNT_FLAG + if (flags != 0) { + if (buf[0] != '\0') + strlcat(buf, ", ", sizeof(buf)); + snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), + "0x%08x", flags); + } + db_printf(" mnt_flag = %s\n", buf); + + buf[0] = '\0'; + flags = mp->mnt_kern_flag; +#define MNT_KERN_FLAG(flag) do { \ + if (flags & (flag)) { \ + if (buf[0] != '\0') \ + strlcat(buf, ", ", sizeof(buf)); \ + strlcat(buf, (#flag) + 5, sizeof(buf)); \ + flags &= ~(flag); \ + } \ +} while (0) + MNT_KERN_FLAG(MNTK_UNMOUNTF); + MNT_KERN_FLAG(MNTK_ASYNC); + MNT_KERN_FLAG(MNTK_SOFTDEP); + MNT_KERN_FLAG(MNTK_NOINSMNTQ); + MNT_KERN_FLAG(MNTK_UNMOUNT); + MNT_KERN_FLAG(MNTK_MWAIT); + MNT_KERN_FLAG(MNTK_SUSPEND); + MNT_KERN_FLAG(MNTK_SUSPEND2); + MNT_KERN_FLAG(MNTK_SUSPENDED); + MNT_KERN_FLAG(MNTK_MPSAFE); + MNT_KERN_FLAG(MNTK_NOKNOTE); + MNT_KERN_FLAG(MNTK_LOOKUP_SHARED); +#undef MNT_KERN_FLAG + if (flags != 0) { + if (buf[0] != '\0') + strlcat(buf, ", ", sizeof(buf)); + snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), + "0x%08x", flags); + } + db_printf(" mnt_kern_flag = %s\n", buf); + + sp = &mp->mnt_stat; + db_printf(" mnt_stat = { version=%u type=%u flags=0x%016jx " + "bsize=%ju iosize=%ju blocks=%ju bfree=%ju bavail=%jd files=%ju " + "ffree=%jd syncwrites=%ju asyncwrites=%ju syncreads=%ju " + "asyncreads=%ju namemax=%u owner=%u fsid=[%d, %d] }\n", + (u_int)sp->f_version, (u_int)sp->f_type, (uintmax_t)sp->f_flags, + (uintmax_t)sp->f_bsize, (uintmax_t)sp->f_iosize, + (uintmax_t)sp->f_blocks, (uintmax_t)sp->f_bfree, + (intmax_t)sp->f_bavail, (uintmax_t)sp->f_files, + (intmax_t)sp->f_ffree, (uintmax_t)sp->f_syncwrites, + (uintmax_t)sp->f_asyncwrites, (uintmax_t)sp->f_syncreads, + (uintmax_t)sp->f_asyncreads, (u_int)sp->f_namemax, + (u_int)sp->f_owner, (int)sp->f_fsid.val[0], (int)sp->f_fsid.val[1]); + + db_printf(" mnt_cred = { uid=%u ruid=%u", + (u_int)mp->mnt_cred->cr_uid, (u_int)mp->mnt_cred->cr_ruid); + if (mp->mnt_cred->cr_prison != NULL) + db_printf(", jail=%d", mp->mnt_cred->cr_prison->pr_id); + db_printf(" }\n"); + db_printf(" mnt_ref = %d\n", mp->mnt_ref); + db_printf(" mnt_gen = %d\n", mp->mnt_gen); + db_printf(" mnt_nvnodelistsize = %d\n", mp->mnt_nvnodelistsize); + db_printf(" mnt_writeopcount = %d\n", mp->mnt_writeopcount); + db_printf(" mnt_noasync = %u\n", mp->mnt_noasync); + db_printf(" mnt_maxsymlinklen = %d\n", mp->mnt_maxsymlinklen); + db_printf(" mnt_iosize_max = %d\n", mp->mnt_iosize_max); + db_printf(" mnt_hashseed = %u\n", mp->mnt_hashseed); + db_printf(" mnt_markercnt = %d\n", mp->mnt_markercnt); + db_printf(" mnt_holdcnt = %d\n", mp->mnt_holdcnt); + db_printf(" mnt_holdcntwaiters = %d\n", mp->mnt_holdcntwaiters); + db_printf(" mnt_secondary_writes = %d\n", mp->mnt_secondary_writes); + db_printf(" mnt_secondary_accwrites = %d\n", + mp->mnt_secondary_accwrites); + db_printf(" mnt_gjprovider = %s\n", + mp->mnt_gjprovider != NULL ? mp->mnt_gjprovider : "NULL"); + db_printf("\n"); + + TAILQ_FOREACH(vp, &mp->mnt_nvnodelist, v_nmntvnodes) { + if (vp->v_type != VMARKER) + vn_printf(vp, "vnode "); + } +} #endif /* DDB */ /* |