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
This commit is contained in:
Pawel Jakub Dawidek
parent
2fd1934152
commit
3800322fe2
@ -2698,6 +2698,158 @@ DB_SHOW_COMMAND(vnode, db_show_vnode)
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vp = (struct vnode *)addr;
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vn_printf(vp, "vnode ");
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}
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/*
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* Show details about the given mount point.
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*/
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DB_SHOW_COMMAND(mount, db_show_mount)
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{
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struct mount *mp;
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struct statfs *sp;
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struct vnode *vp;
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char buf[512];
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u_int flags;
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if (!have_addr) {
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/* No address given, print short info about all mount points. */
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TAILQ_FOREACH(mp, &mountlist, mnt_list) {
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db_printf("%p %s on %s (%s)\n", mp,
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mp->mnt_stat.f_mntfromname,
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mp->mnt_stat.f_mntonname,
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mp->mnt_stat.f_fstypename);
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}
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db_printf("\nMore info: show mount <addr>\n");
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return;
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}
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mp = (struct mount *)addr;
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db_printf("%p %s on %s (%s)\n", mp, mp->mnt_stat.f_mntfromname,
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mp->mnt_stat.f_mntonname, mp->mnt_stat.f_fstypename);
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buf[0] = '\0';
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flags = mp->mnt_flag;
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#define MNT_FLAG(flag) do { \
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if (flags & (flag)) { \
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if (buf[0] != '\0') \
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strlcat(buf, ", ", sizeof(buf)); \
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strlcat(buf, (#flag) + 4, sizeof(buf)); \
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flags &= ~(flag); \
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} \
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} while (0)
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MNT_FLAG(MNT_RDONLY);
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MNT_FLAG(MNT_SYNCHRONOUS);
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MNT_FLAG(MNT_NOEXEC);
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MNT_FLAG(MNT_NOSUID);
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MNT_FLAG(MNT_UNION);
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MNT_FLAG(MNT_ASYNC);
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MNT_FLAG(MNT_SUIDDIR);
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MNT_FLAG(MNT_SOFTDEP);
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MNT_FLAG(MNT_NOSYMFOLLOW);
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MNT_FLAG(MNT_GJOURNAL);
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MNT_FLAG(MNT_MULTILABEL);
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MNT_FLAG(MNT_ACLS);
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MNT_FLAG(MNT_NOATIME);
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MNT_FLAG(MNT_NOCLUSTERR);
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MNT_FLAG(MNT_NOCLUSTERW);
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MNT_FLAG(MNT_EXRDONLY);
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MNT_FLAG(MNT_EXPORTED);
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MNT_FLAG(MNT_DEFEXPORTED);
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MNT_FLAG(MNT_EXPORTANON);
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MNT_FLAG(MNT_EXKERB);
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MNT_FLAG(MNT_EXPUBLIC);
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MNT_FLAG(MNT_LOCAL);
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MNT_FLAG(MNT_QUOTA);
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MNT_FLAG(MNT_ROOTFS);
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MNT_FLAG(MNT_USER);
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MNT_FLAG(MNT_IGNORE);
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MNT_FLAG(MNT_UPDATE);
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MNT_FLAG(MNT_DELEXPORT);
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MNT_FLAG(MNT_RELOAD);
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MNT_FLAG(MNT_FORCE);
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MNT_FLAG(MNT_SNAPSHOT);
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MNT_FLAG(MNT_BYFSID);
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#undef MNT_FLAG
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if (flags != 0) {
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if (buf[0] != '\0')
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strlcat(buf, ", ", sizeof(buf));
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snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
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"0x%08x", flags);
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}
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db_printf(" mnt_flag = %s\n", buf);
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buf[0] = '\0';
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flags = mp->mnt_kern_flag;
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#define MNT_KERN_FLAG(flag) do { \
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if (flags & (flag)) { \
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if (buf[0] != '\0') \
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strlcat(buf, ", ", sizeof(buf)); \
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strlcat(buf, (#flag) + 5, sizeof(buf)); \
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flags &= ~(flag); \
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} \
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} while (0)
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MNT_KERN_FLAG(MNTK_UNMOUNTF);
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MNT_KERN_FLAG(MNTK_ASYNC);
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MNT_KERN_FLAG(MNTK_SOFTDEP);
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MNT_KERN_FLAG(MNTK_NOINSMNTQ);
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MNT_KERN_FLAG(MNTK_UNMOUNT);
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MNT_KERN_FLAG(MNTK_MWAIT);
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MNT_KERN_FLAG(MNTK_SUSPEND);
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MNT_KERN_FLAG(MNTK_SUSPEND2);
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MNT_KERN_FLAG(MNTK_SUSPENDED);
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MNT_KERN_FLAG(MNTK_MPSAFE);
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MNT_KERN_FLAG(MNTK_NOKNOTE);
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MNT_KERN_FLAG(MNTK_LOOKUP_SHARED);
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#undef MNT_KERN_FLAG
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if (flags != 0) {
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if (buf[0] != '\0')
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strlcat(buf, ", ", sizeof(buf));
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snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
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"0x%08x", flags);
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}
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db_printf(" mnt_kern_flag = %s\n", buf);
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sp = &mp->mnt_stat;
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db_printf(" mnt_stat = { version=%u type=%u flags=0x%016jx "
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"bsize=%ju iosize=%ju blocks=%ju bfree=%ju bavail=%jd files=%ju "
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"ffree=%jd syncwrites=%ju asyncwrites=%ju syncreads=%ju "
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"asyncreads=%ju namemax=%u owner=%u fsid=[%d, %d] }\n",
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(u_int)sp->f_version, (u_int)sp->f_type, (uintmax_t)sp->f_flags,
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(uintmax_t)sp->f_bsize, (uintmax_t)sp->f_iosize,
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(uintmax_t)sp->f_blocks, (uintmax_t)sp->f_bfree,
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(intmax_t)sp->f_bavail, (uintmax_t)sp->f_files,
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(intmax_t)sp->f_ffree, (uintmax_t)sp->f_syncwrites,
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(uintmax_t)sp->f_asyncwrites, (uintmax_t)sp->f_syncreads,
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(uintmax_t)sp->f_asyncreads, (u_int)sp->f_namemax,
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(u_int)sp->f_owner, (int)sp->f_fsid.val[0], (int)sp->f_fsid.val[1]);
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db_printf(" mnt_cred = { uid=%u ruid=%u",
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(u_int)mp->mnt_cred->cr_uid, (u_int)mp->mnt_cred->cr_ruid);
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if (mp->mnt_cred->cr_prison != NULL)
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db_printf(", jail=%d", mp->mnt_cred->cr_prison->pr_id);
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db_printf(" }\n");
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db_printf(" mnt_ref = %d\n", mp->mnt_ref);
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db_printf(" mnt_gen = %d\n", mp->mnt_gen);
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db_printf(" mnt_nvnodelistsize = %d\n", mp->mnt_nvnodelistsize);
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db_printf(" mnt_writeopcount = %d\n", mp->mnt_writeopcount);
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db_printf(" mnt_noasync = %u\n", mp->mnt_noasync);
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db_printf(" mnt_maxsymlinklen = %d\n", mp->mnt_maxsymlinklen);
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db_printf(" mnt_iosize_max = %d\n", mp->mnt_iosize_max);
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db_printf(" mnt_hashseed = %u\n", mp->mnt_hashseed);
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db_printf(" mnt_markercnt = %d\n", mp->mnt_markercnt);
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db_printf(" mnt_holdcnt = %d\n", mp->mnt_holdcnt);
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db_printf(" mnt_holdcntwaiters = %d\n", mp->mnt_holdcntwaiters);
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db_printf(" mnt_secondary_writes = %d\n", mp->mnt_secondary_writes);
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db_printf(" mnt_secondary_accwrites = %d\n",
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mp->mnt_secondary_accwrites);
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db_printf(" mnt_gjprovider = %s\n",
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mp->mnt_gjprovider != NULL ? mp->mnt_gjprovider : "NULL");
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db_printf("\n");
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TAILQ_FOREACH(vp, &mp->mnt_nvnodelist, v_nmntvnodes) {
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if (vp->v_type != VMARKER)
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vn_printf(vp, "vnode ");
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}
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}
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#endif /* DDB */
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/*
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@ -41,6 +41,11 @@
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#include <sys/_mutex.h>
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#endif
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/*
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* NOTE: When changing statfs structure, mount structure, MNT_* flags or
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* MNTK_* flags also update DDB show mount command in vfs_subr.c.
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*/
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typedef struct fsid { int32_t val[2]; } fsid_t; /* filesystem id type */
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/*
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