NAME
files - open files
SYNOPSIS
files [-d dentry] | [-p inode] | [-c] [-R reference] [pid | taskp] ...
DESCRIPTION
This command displays information about open files of a context.
It prints the context's current root directory and current working
directory, and then for each open file descriptor it prints a pointer
to its file struct, a pointer to its dentry struct, a pointer to the
inode, the file type, and the pathname. If no arguments are entered,
the current context is used. The -R option, typically invoked from
"foreach files", searches for references to a supplied number, address,
or filename argument, and prints only the essential information leading
up to and including the reference. The -d option is not context
specific, and only shows the data requested.
-d dentry given a hexadecimal dentry address, display its inode,
super block, file type, and full pathname.
-p inode given a hexadecimal inode address, dump all of its pages
that are in the page cache.
-c for each open file descriptor, prints a pointer to its
inode, a pointer to the inode's i_mapping address_space
structure, the number of pages of the inode that are in
the page cache, the file type, and the pathname.
-R reference search for references to this file descriptor number,
filename, dentry, inode, address_space, or file structure
address.
pid a process PID.
taskp a hexadecimal task_struct pointer.
EXAMPLES
Display the open files of the current context:
crash> files
PID: 720 TASK: c67f2000 CPU: 1 COMMAND: "innd"
ROOT: / CWD: /var/spool/news/articles
FD FILE DENTRY INODE TYPE PATH
0 c6b9c740 c7cc45a0 c7c939e0 CHR /dev/null
1 c6b9c800 c537bb20 c54d0000 REG /var/log/news/news
2 c6df9600 c537b420 c5c36360 REG /var/log/news/errlog
3 c74182c0 c6ede260 c6da3d40 PIPE
4 c6df9720 c696c620 c69398c0 SOCK
5 c6b9cc20 c68e7000 c6938d80 SOCK
6 c6b9c920 c7cc45a0 c7c939e0 CHR /dev/null
7 c6b9c680 c58fa5c0 c58a1200 REG /var/lib/news/history
8 c6df9f00 c6ede760 c6da3200 PIPE
9 c6b9c6e0 c58fa140 c5929560 REG /var/lib/news/history.dir
10 c7fa9320 c7fab160 c7fafd40 CHR /dev/console
11 c6b9c7a0 c58fa5c0 c58a1200 REG /var/lib/news/history
12 c377ec60 c58fa5c0 c58a1200 REG /var/lib/news/history
13 c4528aa0 c58fa6c0 c52fbb00 REG /var/lib/news/history.pag
14 c6df9420 c68e7700 c6938360 SOCK
15 c6df9360 c68e7780 c6938120 SOCK
16 c6b9c0e0 c68e7800 c6772000 SOCK
17 c6b9c200 c6b5f9c0 c6b5cea0 REG /var/lib/news/active
21 c6b9c080 c6ede760 c6da3200 PIPE
Display the files opened by the "crond" daemon, which is PID 462:
crash> files 462
PID: 462 TASK: f7220000 CPU: 2 COMMAND: "crond"
ROOT: / CWD: /var/spool
FD FILE DENTRY INODE TYPE PATH
0 f7534ae0 f7538de0 f7518dc0 CHR /dev/console
1 f7368f80 f72c7a40 f72f27e0 FIFO pipe:/[1456]
2 f74f3c80 f72c79c0 f72f2600 FIFO pipe:/[1457]
3 f7368b60 f72a5be0 f74300c0 REG /var/run/crond.pid
4 f7534360 f73408c0 f72c2840 REG /var/log/cron
7 f7368ce0 f72c7940 f72f2420 FIFO pipe:/[1458]
8 f7295de0 f72c7940 f72f2420 FIFO pipe:/[1458]
21 f74f36e0 f747cdc0 f747e840 CHR /dev/null
The -R option is typically invoked from "foreach files". This example
shows all tasks that have "/dev/pts/4" open:
crash> foreach files -R pts/4
PID: 18633 TASK: c310a000 CPU: 0 COMMAND: "crash"
ROOT: / CWD: /home/CVS_pool/crash
FD FILE DENTRY INODE TYPE PATH
0 c1412850 c2cb96d0 c2cad430 CHR /dev/pts/4
1 c1412850 c2cb96d0 c2cad430 CHR /dev/pts/4
2 c1412850 c2cb96d0 c2cad430 CHR /dev/pts/4
PID: 18664 TASK: c2392000 CPU: 1 COMMAND: "less"
ROOT: / CWD: /home/CVS_pool/crash
FD FILE DENTRY INODE TYPE PATH
1 c1412850 c2cb96d0 c2cad430 CHR /dev/pts/4
2 c1412850 c2cb96d0 c2cad430 CHR /dev/pts/4
PID: 23162 TASK: c5088000 CPU: 1 COMMAND: "bash"
ROOT: / CWD: /home/CVS_pool/crash
FD FILE DENTRY INODE TYPE PATH
0 c1412850 c2cb96d0 c2cad430 CHR /dev/pts/4
1 c1412850 c2cb96d0 c2cad430 CHR /dev/pts/4
2 c1412850 c2cb96d0 c2cad430 CHR /dev/pts/4
255 c1412850 c2cb96d0 c2cad430 CHR /dev/pts/4
PID: 23159 TASK: c10fc000 CPU: 1 COMMAND: "xterm"
ROOT: / CWD: /homes/anderson/
FD FILE DENTRY INODE TYPE PATH
5 c1560da0 c2cb96d0 c2cad430 CHR /dev/pts/4
Display information about the dentry at address f745fd60:
crash> files -d f745fd60
DENTRY INODE SUPERBLK TYPE PATH
f745fd60 f7284640 f73a3e00 REG /var/spool/lpd/lpd.lock
For each open file, display the number of pages that are in the page cache:
crash> files -c 1954
PID: 1954 TASK: f7a28000 CPU: 1 COMMAND: "syslogd"
ROOT: / CWD: /
FD INODE I_MAPPING NRPAGES TYPE PATH
0 cb3ae868 cb3ae910 0 SOCK socket:/[4690]
2 f2721c5c f2721d04 461 REG /var/log/messages
3 cbda4884 cbda492c 47 REG /var/log/secure
4 e48092c0 e4809368 58 REG /var/log/maillog
5 f65192c0 f6519368 48 REG /var/log/cron
6 e4809e48 e4809ef0 0 REG /var/log/spooler
7 d9c43884 d9c4392c 0 REG /var/log/boot.log
For the inode at address f59b90fc, display all of its pages that are in
the page cache:
crash> files -p f59b90fc
INODE NRPAGES
f59b90fc 6
PAGE PHYSICAL MAPPING INDEX CNT FLAGS
ca3353e0 39a9f000 f59b91ac 0 2 82c referenced,uptodate,lru,private
ca22cb20 31659000 f59b91ac 1 2 82c referenced,uptodate,lru,private
ca220160 3100b000 f59b91ac 2 2 82c referenced,uptodate,lru,private
ca1ddde0 2eeef000 f59b91ac 3 2 82c referenced,uptodate,lru,private
ca36b300 3b598000 f59b91ac 4 2 82c referenced,uptodate,lru,private
ca202680 30134000 f59b91ac 5 2 82c referenced,uptodate,lru,private
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