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openCryptoki.14879
ocki-3.11.1-COMMON-A-cross-process-lock-should-...
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File ocki-3.11.1-COMMON-A-cross-process-lock-should-also-lock-against.patch of Package openCryptoki.14879
From 499e854f734ddd1e82c617f19bc925b3ca52da6c Mon Sep 17 00:00:00 2001 From: Ingo Franzki <ifranzki@linux.ibm.com> Date: Wed, 2 Oct 2019 12:39:10 +0200 Subject: [PATCH] COMMON: A cross-process lock should also lock against threads The cross-process locks use an flock to lock against other processes. However, this does not protect against other threads within the same process. Add a pthread recursive mutex to also protect against threads. Signed-off-by: Ingo Franzki <ifranzki@linux.ibm.com> --- usr/lib/api/apiutil.c | 24 ++++++++++++++++++---- usr/lib/common/h_extern.h | 4 +++- usr/lib/common/host_defs.h | 2 ++ usr/lib/common/new_host.c | 6 +++++- usr/lib/common/utility.c | 47 ++++++++++++++++++++++++++++++++++++++++++- usr/lib/ep11_stdll/new_host.c | 6 +++++- usr/lib/icsf_stdll/new_host.c | 6 +++++- 7 files changed, 86 insertions(+), 9 deletions(-) diff --git a/usr/lib/api/apiutil.c b/usr/lib/api/apiutil.c index 3de9ec92..af78ed67 100644 --- a/usr/lib/api/apiutil.c +++ b/usr/lib/api/apiutil.c @@ -23,6 +23,7 @@ #include <dlfcn.h> #include <errno.h> #include <sys/syslog.h> +#include <pthread.h> #include <sys/ipc.h> @@ -38,6 +39,7 @@ #include <sys/file.h> static int xplfd = -1; +pthread_rwlock_t xplfd_rwlock = PTHREAD_RWLOCK_INITIALIZER; #include <libgen.h> @@ -69,20 +71,34 @@ CK_RV CreateProcLock(void) CK_RV ProcLock(void) { - if (xplfd != -1) + if (pthread_rwlock_wrlock(&xplfd_rwlock)) { + TRACE_ERROR("Lock failed.\n"); + return CKR_CANT_LOCK; + } + + if (xplfd != -1) { flock(xplfd, LOCK_EX); - else + } else { TRACE_DEVEL("No file descriptor to lock with.\n"); + return CKR_CANT_LOCK; + } return CKR_OK; } CK_RV ProcUnLock(void) { - if (xplfd != -1) + if (xplfd != -1) { flock(xplfd, LOCK_UN); - else + } else { TRACE_DEVEL("No file descriptor to unlock with.\n"); + return CKR_CANT_LOCK; + } + + if (pthread_rwlock_unlock(&xplfd_rwlock)) { + TRACE_ERROR("Unlock failed.\n"); + return CKR_CANT_LOCK; + } return CKR_OK; } diff --git a/usr/lib/common/h_extern.h b/usr/lib/common/h_extern.h index fbe2b131..119ff7ed 100644 --- a/usr/lib/common/h_extern.h +++ b/usr/lib/common/h_extern.h @@ -1793,8 +1793,10 @@ CK_RV check_user_and_group(); //lock and unlock routines CK_RV XProcLock(STDLL_TokData_t *tokdata); CK_RV XProcUnLock(STDLL_TokData_t *tokdata); +CK_RV XThreadLock(STDLL_TokData_t *tokdata); +CK_RV XThreadUnLock(STDLL_TokData_t *tokdata); CK_RV CreateXProcLock(char *tokname, STDLL_TokData_t *tokdata); -void XProcLock_Init(STDLL_TokData_t *tokdata); +CK_RV XProcLock_Init(STDLL_TokData_t *tokdata); void CloseXProcLock(STDLL_TokData_t *tokdata); //list mechanisms diff --git a/usr/lib/common/host_defs.h b/usr/lib/common/host_defs.h index d4521f39..2b119d16 100644 --- a/usr/lib/common/host_defs.h +++ b/usr/lib/common/host_defs.h @@ -17,6 +17,7 @@ #include "pkcs32.h" #include <stdint.h> +#include <pthread.h> #include "local_types.h" @@ -280,6 +281,7 @@ struct _LW_SHM_TYPE { struct _STDLL_TokData_t { CK_SLOT_INFO slot_info; int spinxplfd; // token specific lock + pthread_mutex_t spinxplfd_mutex; // token specific pthread lock char data_store[256]; // path information of the token directory CK_BYTE user_pin_md5[MD5_HASH_SIZE]; CK_BYTE so_pin_md5[MD5_HASH_SIZE]; diff --git a/usr/lib/common/new_host.c b/usr/lib/common/new_host.c index a68e38b4..da049eac 100644 --- a/usr/lib/common/new_host.c +++ b/usr/lib/common/new_host.c @@ -164,7 +164,11 @@ CK_RV ST_Initialize(API_Slot_t *sltp, CK_SLOT_ID SlotNumber, } /* Initialize Lock */ - XProcLock_Init(sltp->TokData); + if (XProcLock_Init(sltp->TokData) != CKR_OK) { + TRACE_ERROR("Thread lock failed.\n"); + rc = CKR_FUNCTION_FAILED; + goto done; + } /* Create lockfile */ if (CreateXProcLock(sinfp->tokname, sltp->TokData) != CKR_OK) { diff --git a/usr/lib/common/utility.c b/usr/lib/common/utility.c index 794d7e89..8f927c8a 100644 --- a/usr/lib/common/utility.c +++ b/usr/lib/common/utility.c @@ -21,6 +21,7 @@ #include <errno.h> #include <pwd.h> #include <grp.h> +#include <pthread.h> #include "pkcs11types.h" #include "defs.h" @@ -388,10 +389,34 @@ void CloseXProcLock(STDLL_TokData_t *tokdata) { if (tokdata->spinxplfd != -1) close(tokdata->spinxplfd); + pthread_mutex_destroy(&tokdata->spinxplfd_mutex); +} + +CK_RV XThreadLock(STDLL_TokData_t *tokdata) +{ + if (pthread_mutex_lock(&tokdata->spinxplfd_mutex)) { + TRACE_ERROR("Lock failed.\n"); + return CKR_CANT_LOCK; + } + + return CKR_OK; +} + +CK_RV XThreadUnLock(STDLL_TokData_t *tokdata) +{ + if (pthread_mutex_unlock(&tokdata->spinxplfd_mutex)) { + TRACE_ERROR("Unlock failed.\n"); + return CKR_CANT_LOCK; + } + + return CKR_OK; } CK_RV XProcLock(STDLL_TokData_t *tokdata) { + if (XThreadLock(tokdata) != CKR_OK) + return CKR_CANT_LOCK; + if (tokdata->spinxplfd != -1) { flock(tokdata->spinxplfd, LOCK_EX); } else { @@ -411,12 +436,32 @@ CK_RV XProcUnLock(STDLL_TokData_t *tokdata) return CKR_CANT_LOCK; } + if (XThreadUnLock(tokdata) != CKR_OK) + return CKR_CANT_LOCK; + return CKR_OK; } -void XProcLock_Init(STDLL_TokData_t *tokdata) +CK_RV XProcLock_Init(STDLL_TokData_t *tokdata) { + pthread_mutexattr_t attr; + tokdata->spinxplfd = -1; + + if (pthread_mutexattr_init(&attr)) { + TRACE_ERROR("Mutex attribute init failed.\n"); + return CKR_CANT_LOCK; + } + if (pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE)) { + TRACE_ERROR("Mutex attribute set failed.\n"); + return CKR_CANT_LOCK; + } + if (pthread_mutex_init(&tokdata->spinxplfd_mutex, &attr)) { + TRACE_ERROR("Mutex init failed.\n"); + return CKR_CANT_LOCK; + } + + return CKR_OK; } // diff --git a/usr/lib/ep11_stdll/new_host.c b/usr/lib/ep11_stdll/new_host.c index 875d6d30..2311a560 100644 --- a/usr/lib/ep11_stdll/new_host.c +++ b/usr/lib/ep11_stdll/new_host.c @@ -156,7 +156,11 @@ CK_RV ST_Initialize(API_Slot_t * sltp, CK_SLOT_ID SlotNumber, } /* Initialize lock */ - XProcLock_Init(sltp->TokData); + if (XProcLock_Init(sltp->TokData) != CKR_OK) { + TRACE_ERROR("Thread lock failed.\n"); + rc = CKR_FUNCTION_FAILED; + goto done; + } /* Create lockfile */ if (CreateXProcLock(sinfp->tokname, sltp->TokData) != CKR_OK) { diff --git a/usr/lib/icsf_stdll/new_host.c b/usr/lib/icsf_stdll/new_host.c index f01475be..ffdc4dca 100644 --- a/usr/lib/icsf_stdll/new_host.c +++ b/usr/lib/icsf_stdll/new_host.c @@ -156,7 +156,11 @@ CK_RV ST_Initialize(API_Slot_t * sltp, CK_SLOT_ID SlotNumber, } /* Initialize lock */ - XProcLock_Init(sltp->TokData); + if (XProcLock_Init(sltp->TokData) != CKR_OK) { + TRACE_ERROR("Thread lock failed.\n"); + rc = CKR_FUNCTION_FAILED; + goto done; + } /* Create lockfile */ if (CreateXProcLock(sinfp->tokname, sltp->TokData) != CKR_OK) { -- 2.13.7
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