/* * security/tomoyo/environ.c * * Copyright (C) 2005-2011 NTT DATA CORPORATION */ #include "common.h" /** * tomoyo_check_env_acl - Check permission for environment variable's name. * * @r: Pointer to "struct tomoyo_request_info". * @ptr: Pointer to "struct tomoyo_acl_info". * * Returns true if granted, false otherwise. */ static bool tomoyo_check_env_acl(struct tomoyo_request_info *r, const struct tomoyo_acl_info *ptr) { const struct tomoyo_env_acl *acl = container_of(ptr, typeof(*acl), head); return tomoyo_path_matches_pattern(r->param.environ.name, acl->env); } /** * tomoyo_audit_env_log - Audit environment variable name log. * * @r: Pointer to "struct tomoyo_request_info". * * Returns 0 on success, negative value otherwise. */ static int tomoyo_audit_env_log(struct tomoyo_request_info *r) { return tomoyo_supervisor(r, "misc env %s\n", r->param.environ.name->name); } /** * tomoyo_env_perm - Check permission for environment variable's name. * * @r: Pointer to "struct tomoyo_request_info". * @env: The name of environment variable. * * Returns 0 on success, negative value otherwise. * * Caller holds tomoyo_read_lock(). */ int tomoyo_env_perm(struct tomoyo_request_info *r, const char *env) { struct tomoyo_path_info environ; int error; if (!env || !*env) return 0; environ.name = env; tomoyo_fill_path_info(&environ); r->param_type = TOMOYO_TYPE_ENV_ACL; r->param.environ.name = &environ; do { tomoyo_check_acl(r, tomoyo_check_env_acl); error = tomoyo_audit_env_log(r); } while (error == TOMOYO_RETRY_REQUEST); return error; } /** * tomoyo_same_env_acl - Check for duplicated "struct tomoyo_env_acl" entry. * * @a: Pointer to "struct tomoyo_acl_info". * @b: Pointer to "struct tomoyo_acl_info". * * Returns true if @a == @b, false otherwise. */ static bool tomoyo_same_env_acl(const struct tomoyo_acl_info *a, const struct tomoyo_acl_info *b) { const struct tomoyo_env_acl *p1 = container_of(a, typeof(*p1), head); const struct tomoyo_env_acl *p2 = container_of(b, typeof(*p2), head); return p1->env == p2->env; } /** * tomoyo_write_env - Write "struct tomoyo_env_acl" list. * * @param: Pointer to "struct tomoyo_acl_param". * * Returns 0 on success, negative value otherwise. * * Caller holds tomoyo_read_lock(). */ static int tomoyo_write_env(struct tomoyo_acl_param *param) { struct tomoyo_env_acl e = { .head.type = TOMOYO_TYPE_ENV_ACL }; int error = -ENOMEM; const char *data = tomoyo_read_token(param); if (!tomoyo_correct_word(data) || strchr(data, '=')) return -EINVAL; e.env = tomoyo_get_name(data); if (!e.env) return error; error = tomoyo_update_domain(&e.head, sizeof(e), param, tomoyo_same_env_acl, NULL); tomoyo_put_name(e.env); return error; } /** * tomoyo_write_misc - Update environment variable list. * * @param: Pointer to "struct tomoyo_acl_param". * * Returns 0 on success, negative value otherwise. */ int tomoyo_write_misc(struct tomoyo_acl_param *param) { if (tomoyo_str_starts(¶m->data, "env ")) return tomoyo_write_env(param); return -EINVAL; } -next.git/commit/drivers/usb/core/of.c?id=161e6d44a5e2d3f85365cb717d60e363171b39e6'>of.c
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authorGabriel Krisman Bertazi <krisman@collabora.co.uk>2017-01-16 12:23:42 -0200
committerUlf Hansson <ulf.hansson@linaro.org>2017-01-31 11:26:49 +0100
commit161e6d44a5e2d3f85365cb717d60e363171b39e6 (patch)
tree5c8b730a137696ef979f05ceae869b6e0348794c /drivers/usb/core/of.c
parent566cf877a1fcb6d6dc0126b076aad062054c2637 (diff)
mmc: sdhci: Ignore unexpected CARD_INT interrupts
One of our kernelCI boxes hanged at boot because a faulty eSDHC device was triggering spurious CARD_INT interrupts for SD cards, causing CMD52 reads, which are not allowed for SD devices. This adds a sanity check to the interruption path, preventing that illegal command from getting sent if the CARD_INT interruption should be disabled. This quirk allows that particular machine to resume boot despite the faulty hardware, instead of getting hung dealing with thousands of mishandled interrupts. Suggested-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Cc: <stable@vger.kernel.org>
Diffstat (limited to 'drivers/usb/core/of.c')