forked from Minki/linux
TOMOYO: Use structure for passing common arguments.
Use "struct tomoyo_request_info" instead of passing individual arguments. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Tetsuo Handa
James Morris
parent
4c3e9e2ded
commit
cb0abe6a5b
@ -984,21 +984,6 @@ static const char *tomoyo_get_exe(void)
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return cp;
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}
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/**
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* tomoyo_get_msg - Get warning message.
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*
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* @is_enforce: Is it enforcing mode?
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*
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* Returns "ERROR" or "WARNING".
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*/
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const char *tomoyo_get_msg(const bool is_enforce)
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{
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if (is_enforce)
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return "ERROR";
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else
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return "WARNING";
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}
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/**
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* tomoyo_check_flags - Check mode for specified functionality.
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*
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@ -1040,17 +1025,20 @@ bool tomoyo_verbose_mode(const struct tomoyo_domain_info *domain)
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/**
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* tomoyo_domain_quota_is_ok - Check for domain's quota.
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*
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* @domain: Pointer to "struct tomoyo_domain_info".
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* @r: Pointer to "struct tomoyo_request_info".
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*
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* Returns true if the domain is not exceeded quota, false otherwise.
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*
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* Caller holds tomoyo_read_lock().
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*/
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bool tomoyo_domain_quota_is_ok(struct tomoyo_domain_info * const domain)
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bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info *r)
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{
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unsigned int count = 0;
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struct tomoyo_domain_info *domain = r->domain;
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struct tomoyo_acl_info *ptr;
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if (r->mode != TOMOYO_CONFIG_LEARNING)
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return false;
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if (!domain)
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return true;
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list_for_each_entry_rcu(ptr, &domain->acl_info_list, list) {
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@ -44,6 +44,13 @@ struct linux_binprm;
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/* Profile number is an integer between 0 and 255. */
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#define TOMOYO_MAX_PROFILES 256
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enum tomoyo_mode_index {
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TOMOYO_CONFIG_DISABLED,
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TOMOYO_CONFIG_LEARNING,
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TOMOYO_CONFIG_PERMISSIVE,
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TOMOYO_CONFIG_ENFORCING
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};
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/* Keywords for ACLs. */
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#define TOMOYO_KEYWORD_ALIAS "alias "
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#define TOMOYO_KEYWORD_ALLOW_READ "allow_read "
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@ -152,6 +159,17 @@ struct tomoyo_page_buffer {
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char buffer[4096];
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};
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/*
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* tomoyo_request_info is a structure which is used for holding
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*
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* (1) Domain information of current process.
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* (2) Access control mode of the profile.
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*/
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struct tomoyo_request_info {
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struct tomoyo_domain_info *domain;
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u8 mode; /* One of tomoyo_mode_index . */
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};
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/*
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* tomoyo_path_info is a structure which is used for holding a string data
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* used by TOMOYO.
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@ -332,8 +350,8 @@ struct tomoyo_domain_info {
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* "allow_read", "allow_write", "allow_create", "allow_unlink", "allow_mkdir",
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* "allow_rmdir", "allow_mkfifo", "allow_mksock", "allow_mkblock",
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* "allow_mkchar", "allow_truncate", "allow_symlink", "allow_rewrite",
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* "allow_chmod", "allow_chown", "allow_chgrp", "allow_chroot", "allow_mount"
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* and "allow_unmount".
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* "allow_ioctl", "allow_chmod", "allow_chown", "allow_chgrp", "allow_chroot",
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* "allow_mount" and "allow_unmount".
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*/
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struct tomoyo_path_acl {
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struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_ACL */
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@ -567,7 +585,7 @@ struct tomoyo_policy_manager_entry {
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bool tomoyo_compare_name_union(const struct tomoyo_path_info *name,
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const struct tomoyo_name_union *ptr);
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/* Check whether the domain has too many ACL entries to hold. */
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bool tomoyo_domain_quota_is_ok(struct tomoyo_domain_info * const domain);
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bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info *r);
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/* Transactional sprintf() for policy dump. */
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bool tomoyo_io_printf(struct tomoyo_io_buffer *head, const char *fmt, ...)
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__attribute__ ((format(printf, 2, 3)));
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@ -623,8 +641,6 @@ bool tomoyo_verbose_mode(const struct tomoyo_domain_info *domain);
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const char *tomoyo_path22keyword(const u8 operation);
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/* Get the last component of the given domainname. */
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const char *tomoyo_get_last_name(const struct tomoyo_domain_info *domain);
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/* Get warning message. */
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const char *tomoyo_get_msg(const bool is_enforce);
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/* Convert single path operation to operation name. */
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const char *tomoyo_path2keyword(const u8 operation);
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/* Create "alias" entry in exception policy. */
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@ -723,7 +739,6 @@ int tomoyo_check_open_permission(struct tomoyo_domain_info *domain,
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int tomoyo_path_perm(const u8 operation, struct path *path);
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int tomoyo_path2_perm(const u8 operation, struct path *path1,
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struct path *path2);
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int tomoyo_check_rewrite_permission(struct file *filp);
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int tomoyo_find_next_domain(struct linux_binprm *bprm);
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/* Drop refcount on tomoyo_name_union. */
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@ -691,7 +691,7 @@ int tomoyo_find_next_domain(struct linux_binprm *bprm)
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char *real_program_name = NULL;
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char *symlink_program_name = NULL;
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const u8 mode = tomoyo_check_flags(old_domain, TOMOYO_MAC_FOR_FILE);
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const bool is_enforce = (mode == 3);
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const bool is_enforce = (mode == TOMOYO_CONFIG_ENFORCING);
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int retval = -ENOMEM;
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struct tomoyo_path_info r; /* real name */
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struct tomoyo_path_info s; /* symlink name */
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@ -90,6 +90,61 @@ bool tomoyo_compare_number_union(const unsigned long value,
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return value >= ptr->values[0] && value <= ptr->values[1];
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}
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/**
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* tomoyo_init_request_info - Initialize "struct tomoyo_request_info" members.
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*
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* @r: Pointer to "struct tomoyo_request_info" to initialize.
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* @domain: Pointer to "struct tomoyo_domain_info". NULL for tomoyo_domain().
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*
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* Returns mode.
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*/
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static int tomoyo_init_request_info(struct tomoyo_request_info *r,
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struct tomoyo_domain_info *domain)
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{
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memset(r, 0, sizeof(*r));
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if (!domain)
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domain = tomoyo_domain();
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r->domain = domain;
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r->mode = tomoyo_check_flags(domain, TOMOYO_MAC_FOR_FILE);
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return r->mode;
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}
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static void tomoyo_warn_log(struct tomoyo_request_info *r, const char *fmt, ...)
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__attribute__ ((format(printf, 2, 3)));
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/**
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* tomoyo_warn_log - Print warning or error message on console.
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*
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* @r: Pointer to "struct tomoyo_request_info".
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* @fmt: The printf()'s format string, followed by parameters.
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*/
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static void tomoyo_warn_log(struct tomoyo_request_info *r, const char *fmt, ...)
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{
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int len = PAGE_SIZE;
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va_list args;
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char *buffer;
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if (!tomoyo_verbose_mode(r->domain))
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return;
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while (1) {
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int len2;
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buffer = kmalloc(len, GFP_NOFS);
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if (!buffer)
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return;
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va_start(args, fmt);
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len2 = vsnprintf(buffer, len - 1, fmt, args);
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va_end(args);
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if (len2 <= len - 1) {
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buffer[len2] = '\0';
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break;
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}
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len = len2 + 1;
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kfree(buffer);
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}
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printk(KERN_WARNING "TOMOYO-%s: Access %s denied for %s\n",
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r->mode == TOMOYO_CONFIG_ENFORCING ? "ERROR" : "WARNING",
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buffer, tomoyo_get_last_name(r->domain));
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kfree(buffer);
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}
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/**
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* tomoyo_path2keyword - Get the name of single path operation.
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*
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@ -652,9 +707,9 @@ static int tomoyo_update_file_acl(const char *filename, u8 perm,
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}
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/**
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* tomoyo_path_acl2 - Check permission for single path operation.
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* tomoyo_path_acl - Check permission for single path operation.
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*
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* @domain: Pointer to "struct tomoyo_domain_info".
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* @r: Pointer to "struct tomoyo_request_info".
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* @filename: Filename to check.
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* @perm: Permission.
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* @may_use_pattern: True if patterned ACL is permitted.
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@ -663,10 +718,11 @@ static int tomoyo_update_file_acl(const char *filename, u8 perm,
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*
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* Caller holds tomoyo_read_lock().
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*/
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static int tomoyo_path_acl2(const struct tomoyo_domain_info *domain,
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const struct tomoyo_path_info *filename,
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const u32 perm, const bool may_use_pattern)
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static int tomoyo_path_acl(const struct tomoyo_request_info *r,
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const struct tomoyo_path_info *filename,
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const u32 perm, const bool may_use_pattern)
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{
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struct tomoyo_domain_info *domain = r->domain;
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struct tomoyo_acl_info *ptr;
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int error = -EPERM;
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@ -692,89 +748,56 @@ static int tomoyo_path_acl2(const struct tomoyo_domain_info *domain,
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}
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/**
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* tomoyo_check_file_acl - Check permission for opening files.
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* tomoyo_file_perm - Check permission for opening files.
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*
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* @domain: Pointer to "struct tomoyo_domain_info".
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* @r: Pointer to "struct tomoyo_request_info".
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* @filename: Filename to check.
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* @operation: Mode ("read" or "write" or "read/write" or "execute").
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*
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* Returns 0 on success, -EPERM otherwise.
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*
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* Caller holds tomoyo_read_lock().
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*/
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static int tomoyo_check_file_acl(const struct tomoyo_domain_info *domain,
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const struct tomoyo_path_info *filename,
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const u8 operation)
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{
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u32 perm = 0;
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if (!tomoyo_check_flags(domain, TOMOYO_MAC_FOR_FILE))
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return 0;
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if (operation == 6)
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perm = 1 << TOMOYO_TYPE_READ_WRITE;
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else if (operation == 4)
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perm = 1 << TOMOYO_TYPE_READ;
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else if (operation == 2)
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perm = 1 << TOMOYO_TYPE_WRITE;
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else if (operation == 1)
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perm = 1 << TOMOYO_TYPE_EXECUTE;
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else
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BUG();
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return tomoyo_path_acl2(domain, filename, perm, operation != 1);
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}
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/**
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* tomoyo_check_file_perm2 - Check permission for opening files.
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*
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* @domain: Pointer to "struct tomoyo_domain_info".
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* @filename: Filename to check.
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* @perm: Mode ("read" or "write" or "read/write" or "execute").
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* @operation: Operation name passed used for verbose mode.
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* @mode: Access control mode.
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* @mode: Mode ("read" or "write" or "read/write" or "execute").
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*
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* Returns 0 on success, negative value otherwise.
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*
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* Caller holds tomoyo_read_lock().
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*/
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static int tomoyo_check_file_perm2(struct tomoyo_domain_info * const domain,
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const struct tomoyo_path_info *filename,
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const u8 perm, const char *operation,
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const u8 mode)
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static int tomoyo_file_perm(struct tomoyo_request_info *r,
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const struct tomoyo_path_info *filename,
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const u8 mode)
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{
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const bool is_enforce = (mode == 3);
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const char *msg = "<unknown>";
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int error = 0;
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u32 perm = 0;
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if (!filename)
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return 0;
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error = tomoyo_check_file_acl(domain, filename, perm);
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if (error && perm == 4 && !domain->ignore_global_allow_read
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if (mode == 6) {
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msg = tomoyo_path2keyword(TOMOYO_TYPE_READ_WRITE);
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perm = 1 << TOMOYO_TYPE_READ_WRITE;
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} else if (mode == 4) {
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msg = tomoyo_path2keyword(TOMOYO_TYPE_READ);
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perm = 1 << TOMOYO_TYPE_READ;
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} else if (mode == 2) {
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msg = tomoyo_path2keyword(TOMOYO_TYPE_WRITE);
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perm = 1 << TOMOYO_TYPE_WRITE;
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} else if (mode == 1) {
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msg = tomoyo_path2keyword(TOMOYO_TYPE_EXECUTE);
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perm = 1 << TOMOYO_TYPE_EXECUTE;
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} else
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BUG();
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error = tomoyo_path_acl(r, filename, perm, mode != 1);
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if (error && mode == 4 && !r->domain->ignore_global_allow_read
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&& tomoyo_is_globally_readable_file(filename))
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error = 0;
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if (perm == 6)
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msg = tomoyo_path2keyword(TOMOYO_TYPE_READ_WRITE);
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else if (perm == 4)
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msg = tomoyo_path2keyword(TOMOYO_TYPE_READ);
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else if (perm == 2)
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msg = tomoyo_path2keyword(TOMOYO_TYPE_WRITE);
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else if (perm == 1)
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msg = tomoyo_path2keyword(TOMOYO_TYPE_EXECUTE);
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else
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BUG();
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if (!error)
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return 0;
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if (tomoyo_verbose_mode(domain))
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printk(KERN_WARNING "TOMOYO-%s: Access '%s(%s) %s' denied "
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"for %s\n", tomoyo_get_msg(is_enforce), msg, operation,
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filename->name, tomoyo_get_last_name(domain));
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if (is_enforce)
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tomoyo_warn_log(r, "%s %s", msg, filename->name);
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if (r->mode == TOMOYO_CONFIG_ENFORCING)
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return error;
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if (mode == 1 && tomoyo_domain_quota_is_ok(domain)) {
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if (tomoyo_domain_quota_is_ok(r)) {
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/* Don't use patterns for execute permission. */
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const struct tomoyo_path_info *patterned_file = (perm != 1) ?
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const struct tomoyo_path_info *patterned_file = (mode != 1) ?
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tomoyo_get_file_pattern(filename) : filename;
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tomoyo_update_file_acl(patterned_file->name, perm,
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domain, false);
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tomoyo_update_file_acl(patterned_file->name, mode,
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r->domain, false);
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}
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return 0;
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}
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@ -965,29 +988,10 @@ static int tomoyo_update_path2_acl(const u8 type, const char *filename1,
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return error;
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}
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/**
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* tomoyo_path_acl - Check permission for single path operation.
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*
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* @domain: Pointer to "struct tomoyo_domain_info".
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* @type: Type of operation.
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* @filename: Filename to check.
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*
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* Returns 0 on success, negative value otherwise.
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*
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* Caller holds tomoyo_read_lock().
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*/
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static int tomoyo_path_acl(struct tomoyo_domain_info *domain, const u8 type,
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const struct tomoyo_path_info *filename)
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{
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if (!tomoyo_check_flags(domain, TOMOYO_MAC_FOR_FILE))
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return 0;
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return tomoyo_path_acl2(domain, filename, 1 << type, 1);
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}
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/**
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* tomoyo_path2_acl - Check permission for double path operation.
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*
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* @domain: Pointer to "struct tomoyo_domain_info".
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* @r: Pointer to "struct tomoyo_request_info".
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* @type: Type of operation.
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* @filename1: First filename to check.
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* @filename2: Second filename to check.
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@ -996,17 +1000,15 @@ static int tomoyo_path_acl(struct tomoyo_domain_info *domain, const u8 type,
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*
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* Caller holds tomoyo_read_lock().
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*/
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static int tomoyo_path2_acl(const struct tomoyo_domain_info *domain,
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const u8 type,
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static int tomoyo_path2_acl(const struct tomoyo_request_info *r, const u8 type,
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const struct tomoyo_path_info *filename1,
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const struct tomoyo_path_info *filename2)
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{
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const struct tomoyo_domain_info *domain = r->domain;
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struct tomoyo_acl_info *ptr;
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const u8 perm = 1 << type;
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int error = -EPERM;
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if (!tomoyo_check_flags(domain, TOMOYO_MAC_FOR_FILE))
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return 0;
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list_for_each_entry_rcu(ptr, &domain->acl_info_list, list) {
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struct tomoyo_path2_acl *acl;
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if (ptr->type != TOMOYO_TYPE_PATH2_ACL)
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@ -1025,42 +1027,32 @@ static int tomoyo_path2_acl(const struct tomoyo_domain_info *domain,
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}
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/**
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* tomoyo_path_permission2 - Check permission for single path operation.
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* tomoyo_path_permission - Check permission for single path operation.
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*
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* @domain: Pointer to "struct tomoyo_domain_info".
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* @r: Pointer to "struct tomoyo_request_info".
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* @operation: Type of operation.
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* @filename: Filename to check.
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* @mode: Access control mode.
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*
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* Returns 0 on success, negative value otherwise.
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*
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* Caller holds tomoyo_read_lock().
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*/
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static int tomoyo_path_permission2(struct tomoyo_domain_info *const domain,
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u8 operation,
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const struct tomoyo_path_info *filename,
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const u8 mode)
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static int tomoyo_path_permission(struct tomoyo_request_info *r, u8 operation,
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const struct tomoyo_path_info *filename)
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{
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const char *msg;
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int error;
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const bool is_enforce = (mode == 3);
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if (!mode)
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return 0;
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next:
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error = tomoyo_path_acl(domain, operation, filename);
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msg = tomoyo_path2keyword(operation);
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error = tomoyo_path_acl(r, filename, 1 << operation, 1);
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if (!error)
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goto ok;
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if (tomoyo_verbose_mode(domain))
|
||||
printk(KERN_WARNING "TOMOYO-%s: Access '%s %s' denied for %s\n",
|
||||
tomoyo_get_msg(is_enforce), msg, filename->name,
|
||||
tomoyo_get_last_name(domain));
|
||||
if (mode == 1 && tomoyo_domain_quota_is_ok(domain)) {
|
||||
tomoyo_warn_log(r, "%s %s", tomoyo_path2keyword(operation),
|
||||
filename->name);
|
||||
if (tomoyo_domain_quota_is_ok(r)) {
|
||||
const char *name = tomoyo_get_file_pattern(filename)->name;
|
||||
tomoyo_update_path_acl(operation, name, domain, false);
|
||||
tomoyo_update_path_acl(operation, name, r->domain, false);
|
||||
}
|
||||
if (!is_enforce)
|
||||
if (r->mode != TOMOYO_CONFIG_ENFORCING)
|
||||
error = 0;
|
||||
ok:
|
||||
/*
|
||||
@ -1089,11 +1081,11 @@ static int tomoyo_path_permission2(struct tomoyo_domain_info *const domain,
|
||||
int tomoyo_check_exec_perm(struct tomoyo_domain_info *domain,
|
||||
const struct tomoyo_path_info *filename)
|
||||
{
|
||||
const u8 mode = tomoyo_check_flags(domain, TOMOYO_MAC_FOR_FILE);
|
||||
struct tomoyo_request_info r;
|
||||
|
||||
if (!mode)
|
||||
if (tomoyo_init_request_info(&r, NULL) == TOMOYO_CONFIG_DISABLED)
|
||||
return 0;
|
||||
return tomoyo_check_file_perm2(domain, filename, 1, "do_execve", mode);
|
||||
return tomoyo_file_perm(&r, filename, 1);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -1111,11 +1103,11 @@ int tomoyo_check_open_permission(struct tomoyo_domain_info *domain,
|
||||
const u8 acc_mode = ACC_MODE(flag);
|
||||
int error = -ENOMEM;
|
||||
struct tomoyo_path_info *buf;
|
||||
const u8 mode = tomoyo_check_flags(domain, TOMOYO_MAC_FOR_FILE);
|
||||
const bool is_enforce = (mode == 3);
|
||||
struct tomoyo_request_info r;
|
||||
int idx;
|
||||
|
||||
if (!mode || !path->mnt)
|
||||
if (tomoyo_init_request_info(&r, domain) == TOMOYO_CONFIG_DISABLED ||
|
||||
!path->mnt)
|
||||
return 0;
|
||||
if (acc_mode == 0)
|
||||
return 0;
|
||||
@ -1138,25 +1130,22 @@ int tomoyo_check_open_permission(struct tomoyo_domain_info *domain,
|
||||
if ((acc_mode & MAY_WRITE) &&
|
||||
((flag & O_TRUNC) || !(flag & O_APPEND)) &&
|
||||
(tomoyo_is_no_rewrite_file(buf))) {
|
||||
error = tomoyo_path_permission2(domain, TOMOYO_TYPE_REWRITE,
|
||||
buf, mode);
|
||||
error = tomoyo_path_permission(&r, TOMOYO_TYPE_REWRITE, buf);
|
||||
}
|
||||
if (!error)
|
||||
error = tomoyo_check_file_perm2(domain, buf, acc_mode, "open",
|
||||
mode);
|
||||
error = tomoyo_file_perm(&r, buf, acc_mode);
|
||||
if (!error && (flag & O_TRUNC))
|
||||
error = tomoyo_path_permission2(domain, TOMOYO_TYPE_TRUNCATE,
|
||||
buf, mode);
|
||||
error = tomoyo_path_permission(&r, TOMOYO_TYPE_TRUNCATE, buf);
|
||||
out:
|
||||
kfree(buf);
|
||||
tomoyo_read_unlock(idx);
|
||||
if (!is_enforce)
|
||||
if (r.mode != TOMOYO_CONFIG_ENFORCING)
|
||||
error = 0;
|
||||
return error;
|
||||
}
|
||||
|
||||
/**
|
||||
* tomoyo_path_perm - Check permission for "create", "unlink", "mkdir", "rmdir", "mkfifo", "mksock", "mkblock", "mkchar", "truncate", "symlink", "ioctl", "chmod", "chown", "chgrp", "chroot", "mount" and "unmount".
|
||||
* tomoyo_path_perm - Check permission for "create", "unlink", "mkdir", "rmdir", "mkfifo", "mksock", "mkblock", "mkchar", "truncate", "symlink", "rewrite", "ioctl", "chmod", "chown", "chgrp", "chroot", "mount" and "unmount".
|
||||
*
|
||||
* @operation: Type of operation.
|
||||
* @path: Pointer to "struct path".
|
||||
@ -1167,18 +1156,23 @@ int tomoyo_path_perm(const u8 operation, struct path *path)
|
||||
{
|
||||
int error = -ENOMEM;
|
||||
struct tomoyo_path_info *buf;
|
||||
struct tomoyo_domain_info *domain = tomoyo_domain();
|
||||
const u8 mode = tomoyo_check_flags(domain, TOMOYO_MAC_FOR_FILE);
|
||||
const bool is_enforce = (mode == 3);
|
||||
struct tomoyo_request_info r;
|
||||
int idx;
|
||||
|
||||
if (!mode || !path->mnt)
|
||||
if (tomoyo_init_request_info(&r, NULL) == TOMOYO_CONFIG_DISABLED ||
|
||||
!path->mnt)
|
||||
return 0;
|
||||
idx = tomoyo_read_lock();
|
||||
buf = tomoyo_get_path(path);
|
||||
if (!buf)
|
||||
goto out;
|
||||
switch (operation) {
|
||||
case TOMOYO_TYPE_REWRITE:
|
||||
if (!tomoyo_is_no_rewrite_file(buf)) {
|
||||
error = 0;
|
||||
goto out;
|
||||
}
|
||||
break;
|
||||
case TOMOYO_TYPE_MKDIR:
|
||||
case TOMOYO_TYPE_RMDIR:
|
||||
case TOMOYO_TYPE_CHROOT:
|
||||
@ -1190,47 +1184,11 @@ int tomoyo_path_perm(const u8 operation, struct path *path)
|
||||
tomoyo_fill_path_info(buf);
|
||||
}
|
||||
}
|
||||
error = tomoyo_path_permission2(domain, operation, buf, mode);
|
||||
error = tomoyo_path_permission(&r, operation, buf);
|
||||
out:
|
||||
kfree(buf);
|
||||
tomoyo_read_unlock(idx);
|
||||
if (!is_enforce)
|
||||
error = 0;
|
||||
return error;
|
||||
}
|
||||
|
||||
/**
|
||||
* tomoyo_check_rewrite_permission - Check permission for "rewrite".
|
||||
*
|
||||
* @filp: Pointer to "struct file".
|
||||
*
|
||||
* Returns 0 on success, negative value otherwise.
|
||||
*/
|
||||
int tomoyo_check_rewrite_permission(struct file *filp)
|
||||
{
|
||||
int error = -ENOMEM;
|
||||
struct tomoyo_domain_info *domain = tomoyo_domain();
|
||||
const u8 mode = tomoyo_check_flags(domain, TOMOYO_MAC_FOR_FILE);
|
||||
const bool is_enforce = (mode == 3);
|
||||
struct tomoyo_path_info *buf;
|
||||
int idx;
|
||||
|
||||
if (!mode || !filp->f_path.mnt)
|
||||
return 0;
|
||||
|
||||
idx = tomoyo_read_lock();
|
||||
buf = tomoyo_get_path(&filp->f_path);
|
||||
if (!buf)
|
||||
goto out;
|
||||
if (!tomoyo_is_no_rewrite_file(buf)) {
|
||||
error = 0;
|
||||
goto out;
|
||||
}
|
||||
error = tomoyo_path_permission2(domain, TOMOYO_TYPE_REWRITE, buf, mode);
|
||||
out:
|
||||
kfree(buf);
|
||||
tomoyo_read_unlock(idx);
|
||||
if (!is_enforce)
|
||||
if (r.mode != TOMOYO_CONFIG_ENFORCING)
|
||||
error = 0;
|
||||
return error;
|
||||
}
|
||||
@ -1248,14 +1206,13 @@ int tomoyo_path2_perm(const u8 operation, struct path *path1,
|
||||
struct path *path2)
|
||||
{
|
||||
int error = -ENOMEM;
|
||||
struct tomoyo_path_info *buf1, *buf2;
|
||||
struct tomoyo_domain_info *domain = tomoyo_domain();
|
||||
const u8 mode = tomoyo_check_flags(domain, TOMOYO_MAC_FOR_FILE);
|
||||
const bool is_enforce = (mode == 3);
|
||||
const char *msg;
|
||||
struct tomoyo_path_info *buf1;
|
||||
struct tomoyo_path_info *buf2;
|
||||
struct tomoyo_request_info r;
|
||||
int idx;
|
||||
|
||||
if (!mode || !path1->mnt || !path2->mnt)
|
||||
if (tomoyo_init_request_info(&r, NULL) == TOMOYO_CONFIG_DISABLED ||
|
||||
!path1->mnt || !path2->mnt)
|
||||
return 0;
|
||||
idx = tomoyo_read_lock();
|
||||
buf1 = tomoyo_get_path(path1);
|
||||
@ -1278,26 +1235,22 @@ int tomoyo_path2_perm(const u8 operation, struct path *path1,
|
||||
}
|
||||
}
|
||||
}
|
||||
error = tomoyo_path2_acl(domain, operation, buf1, buf2);
|
||||
msg = tomoyo_path22keyword(operation);
|
||||
error = tomoyo_path2_acl(&r, operation, buf1, buf2);
|
||||
if (!error)
|
||||
goto out;
|
||||
if (tomoyo_verbose_mode(domain))
|
||||
printk(KERN_WARNING "TOMOYO-%s: Access '%s %s %s' "
|
||||
"denied for %s\n", tomoyo_get_msg(is_enforce),
|
||||
msg, buf1->name, buf2->name,
|
||||
tomoyo_get_last_name(domain));
|
||||
if (mode == 1 && tomoyo_domain_quota_is_ok(domain)) {
|
||||
tomoyo_warn_log(&r, "%s %s %s", tomoyo_path22keyword(operation),
|
||||
buf1->name, buf2->name);
|
||||
if (tomoyo_domain_quota_is_ok(&r)) {
|
||||
const char *name1 = tomoyo_get_file_pattern(buf1)->name;
|
||||
const char *name2 = tomoyo_get_file_pattern(buf2)->name;
|
||||
tomoyo_update_path2_acl(operation, name1, name2, domain,
|
||||
tomoyo_update_path2_acl(operation, name1, name2, r.domain,
|
||||
false);
|
||||
}
|
||||
out:
|
||||
kfree(buf1);
|
||||
kfree(buf2);
|
||||
tomoyo_read_unlock(idx);
|
||||
if (!is_enforce)
|
||||
if (r.mode != TOMOYO_CONFIG_ENFORCING)
|
||||
error = 0;
|
||||
return error;
|
||||
}
|
||||
|
||||
@ -173,7 +173,7 @@ static int tomoyo_file_fcntl(struct file *file, unsigned int cmd,
|
||||
unsigned long arg)
|
||||
{
|
||||
if (cmd == F_SETFL && ((arg ^ file->f_flags) & O_APPEND))
|
||||
return tomoyo_check_rewrite_permission(file);
|
||||
return tomoyo_path_perm(TOMOYO_TYPE_REWRITE, &file->f_path);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user