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LSM: turn sb_eat_lsm_opts() into a method

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Kill ->sb_copy_data() - it's used only in combination with immediately
following ->sb_parse_opts_str().  Turn that combination into a new
method.

This is just a mechanical move - cleanups will be the next step.

Reviewed-by: David Howells <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Al Viro 2018-12-12 20:13:29 -05:00
commit 5b40023911
4 changed files with 33 additions and 14 deletions
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16
security/smack/smack_lsm.c
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@ -739,6 +739,20 @@ out_err:
return rc;
}
static int smack_sb_eat_lsm_opts(char *options, struct security_mnt_opts *opts)
{
char *s = (char *)get_zeroed_page(GFP_KERNEL);
int err;
if (!s)
return -ENOMEM;
err = smack_sb_copy_data(options, s);
if (!err)
err = smack_parse_opts_str(s, opts);
free_page((unsigned long)s);
return err;
}
/**
* smack_set_mnt_opts - set Smack specific mount options
* @sb: the file system superblock
@ -4637,7 +4651,7 @@ static struct security_hook_list smack_hooks[] __lsm_ro_after_init = {
LSM_HOOK_INIT(sb_alloc_security, smack_sb_alloc_security),
LSM_HOOK_INIT(sb_free_security, smack_sb_free_security),
LSM_HOOK_INIT(sb_copy_data, smack_sb_copy_data),
LSM_HOOK_INIT(sb_eat_lsm_opts, smack_sb_eat_lsm_opts),
LSM_HOOK_INIT(sb_statfs, smack_sb_statfs),
LSM_HOOK_INIT(sb_set_mnt_opts, smack_set_mnt_opts),
LSM_HOOK_INIT(sb_parse_opts_str, smack_parse_opts_str),