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Full Discussion: Specify the inode of a file?
Operating Systems Solaris Specify the inode of a file? Post 302894480 by bartus11 on Tuesday 25th of March 2014 04:01:44 PM
Old 03-25-2014
Put this into "fake_inode.d":
Code:
syscall::stat64:entry, syscall::lstat64:entry
/strstr(copyinstr(arg0), "passwd") != NULL/
{
  self->statptr = arg1;
}

syscall::stat64:return, syscall::lstat64:return
/self->statptr != NULL && curpsinfo->pr_dmodel == PR_MODEL_ILP32/
{
  self->st64_32 = (struct stat64_32 *)copyin(self->statptr, sizeof(struct stat64_32));
  self->st64_32->st_ino = 100000000000;
  copyout(self->st64_32, self->statptr, sizeof(struct stat64_32));
}

syscall::stat64:return, syscall::lstat64:return
/self->statptr != NULL && curpsinfo->pr_dmodel == PR_MODEL_LP64/
{
  self->st64 = (struct stat64 *)copyin(self->statptr, sizeof(struct stat64));
  self->st64->st_ino = 100000000000;
  copyout(self->st64, self->statptr, sizeof(struct stat64));
}

Replace "passwd" with whatever filename you want to fake inode for. Then run:
Code:
dtrace -w -s fake_inode.d

In the other terminal run:
Code:
ls -li /etc/passwd

Change the filename of the file that you are checking with "ls", if you changed the filename in the "fake_inode.d" script. This should produce:
Code:
# ls -li /etc/passwd
100000000000 -rw-r--r--   1 root     sys         1972 Jun 13  2013 /etc/passwd

These 4 Users Gave Thanks to bartus11 For This Post:
Don Cragun fpmurphy jim mcnamara unblockable
 

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LEARN ABOUT OPENDARWIN

clri

CLRI(8) 						    BSD System Manager's Manual 						   CLRI(8)

NAME

     clri -- clear an inode

SYNOPSIS

     clri special_device inode_number ...

DESCRIPTION

     Clri is obsoleted for normal file system repair work by fsck(8).

     Clri zeros out the inodes with the specified inode number(s) on the filesystem residing on the given special_device.  The fsck(8) utility is
     usually run after clri to reclaim the zero'ed inode(s) and the blocks previously claimed by those inode(s).  Both read and write permission
     are required on the specified special_device.

     The primary purpose of this routine is to remove a file which for some reason is not being properly handled by fsck(8).  Once removed, it is
     anticipated that fsck(8) will be able to clean up the resulting mess.

SEE ALSO

     fsck(8), fsdb(8), icheck(8), ncheck(8)

BUGS

     If the file is open, the work of clri will be lost when the inode is written back to disk from the inode cache.

4th Berkeley Distribution					  April 19, 1994					 4th Berkeley Distribution
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