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ext2fs: Initial version of DTrace support.

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Commit forgotten file.

Reviewed by:    pfg, gnn
MFC after:      1 week

Differential Revision:    https://reviews.freebsd.org/D19848
This commit is contained in:
Fedor Uporov 2019-04-16 11:37:15 +00:00
parent ebc94b66fe
commit 84b89556b4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=346269
1 changed files with 23 additions and 13 deletions
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36
sys/fs/ext2fs/ext2_extents.c
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@ -37,6 +37,7 @@
#include <sys/bio.h>
#include <sys/buf.h>
#include <sys/conf.h>
#include <sys/sdt.h>
#include <sys/stat.h>
#include <fs/ext2fs/ext2_mount.h>
@ -46,9 +47,17 @@
#include <fs/ext2fs/ext2_extents.h>
#include <fs/ext2fs/ext2_extern.h>
SDT_PROVIDER_DECLARE(ext2fs);
/*
* ext2fs trace probe:
* arg0: verbosity. Higher numbers give more verbose messages
* arg1: Textual message
*/
SDT_PROBE_DEFINE2(ext2fs, , trace, extents, "int", "char*");
static MALLOC_DEFINE(M_EXT2EXTENTS, "ext2_extents", "EXT2 extents");
#ifdef EXT2FS_DEBUG
#ifdef EXT2FS_PRINT_EXTENTS
static void
ext4_ext_print_extent(struct ext4_extent *ep)
{
@ -230,22 +239,22 @@ ext4_ext_check_header(struct inode *ip, struct ext4_extent_header *eh)
fs = ip->i_e2fs;
if (eh->eh_magic != EXT4_EXT_MAGIC) {
error_msg = "invalid magic";
error_msg = "header: invalid magic";
goto corrupted;
}
if (eh->eh_max == 0) {
error_msg = "invalid eh_max";
error_msg = "header: invalid eh_max";
goto corrupted;
}
if (eh->eh_ecount > eh->eh_max) {
error_msg = "invalid eh_entries";
error_msg = "header: invalid eh_entries";
goto corrupted;
}
return (0);
corrupted:
ext2_fserr(fs, ip->i_uid, error_msg);
SDT_PROBE2(ext2fs, , trace, extents, 1, error_msg);
return (EIO);
}
@ -412,7 +421,7 @@ ext4_ext_find_extent(struct inode *ip, daddr_t block,
ppos++;
if (ppos > depth) {
ext2_fserr(fs, ip->i_uid,
SDT_PROBE2(ext2fs, , trace, extents, 1,
"ppos > depth => extent corrupted");
error = EIO;
brelse(bp);
@ -643,13 +652,13 @@ ext4_ext_insert_index(struct inode *ip, struct ext4_extent_path *path,
fs = ip->i_e2fs;
if (lblk == path->ep_index->ei_blk) {
ext2_fserr(fs, ip->i_uid,
SDT_PROBE2(ext2fs, , trace, extents, 1,
"lblk == index blk => extent corrupted");
return (EIO);
}
if (path->ep_header->eh_ecount >= path->ep_header->eh_max) {
ext2_fserr(fs, ip->i_uid,
SDT_PROBE2(ext2fs, , trace, extents, 1,
"ecout > maxcount => extent corrupted");
return (EIO);
}
@ -667,7 +676,7 @@ ext4_ext_insert_index(struct inode *ip, struct ext4_extent_path *path,
memmove(idx + 1, idx, len * sizeof(struct ext4_extent_index));
if (idx > EXT_MAX_INDEX(path->ep_header)) {
ext2_fserr(fs, ip->i_uid,
SDT_PROBE2(ext2fs, , trace, extents, 1,
"index is out of range => extent corrupted");
return (EIO);
}
@ -736,7 +745,7 @@ ext4_ext_split(struct inode *ip, struct ext4_extent_path *path,
* We will split at current extent for now.
*/
if (path[depth].ep_ext > EXT_MAX_EXTENT(path[depth].ep_header)) {
ext2_fserr(fs, ip->i_uid,
SDT_PROBE2(ext2fs, , trace, extents, 1,
"extent is out of range => extent corrupted");
return (EIO);
}
@ -773,7 +782,7 @@ ext4_ext_split(struct inode *ip, struct ext4_extent_path *path,
ex = EXT_FIRST_EXTENT(neh);
if (path[depth].ep_header->eh_ecount != path[depth].ep_header->eh_max) {
ext2_fserr(fs, ip->i_uid,
SDT_PROBE2(ext2fs, , trace, extents, 1,
"extents count out of range => extent corrupted");
error = EIO;
goto cleanup;
@ -1362,7 +1371,7 @@ ext4_ext_rm_leaf(struct inode *ip, struct ext4_extent_path *path,
eh = path[depth].ep_header;
if (!eh) {
ext2_fserr(ip->i_e2fs, ip->i_uid,
SDT_PROBE2(ext2fs, , trace, extents, 1,
"bad header => extent corrupted");
return (EIO);
}
@ -1449,7 +1458,8 @@ ext4_read_extent_tree_block(struct inode *ip, e4fs_daddr_t pblk,
eh = ext4_ext_block_header(bp->b_data);
if (eh->eh_depth != depth) {
ext2_fserr(fs, ip->i_uid, "unexpected eh_depth");
SDT_PROBE2(ext2fs, , trace, extents, 1,
"unexpected eh_depth");
goto err;
}