diff options
Diffstat (limited to 'g10/status.c')
| -rw-r--r-- | g10/status.c | 64 |
1 files changed, 51 insertions, 13 deletions
diff --git a/g10/status.c b/g10/status.c index 38f2c145f..b42265961 100644 --- a/g10/status.c +++ b/g10/status.c @@ -196,6 +196,10 @@ init_shm_coprocessing ( ulong requested_shm_size, int lock_mem ) if ( shm_id == -1 ) log_fatal("can't get %uk of shared memory: %s\n", (unsigned)shm_size/1024, strerror(errno)); + + #if !defined(IPC_HAVE_SHM_LOCK) \ + && defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK) + /* part of the old code which uses mlock */ shm_area = shmat( shm_id, 0, 0 ); if ( shm_area == (char*)-1 ) log_fatal("can't attach %uk shared memory: %s\n", @@ -206,29 +210,17 @@ init_shm_coprocessing ( ulong requested_shm_size, int lock_mem ) #ifdef USE_CAPABILITIES cap_set_proc( cap_from_text("cap_ipc_lock+ep") ); #endif - #ifdef IPC_HAVE_SHM_LOCK - if ( shmctl (shm_id, SHM_LOCK, 0) ) - log_info("locking shared memory %d failed: %s\n", - shm_id, strerror(errno)); - else - shm_is_locked = 1; - #elif defined(HAVE_MLOCK) && !defined(HAVE_BROKEN_MLOCK) /* (need the cast for Solaris with Sun's workshop compilers) */ if ( mlock ( (char*)shm_area, shm_size) ) log_info("locking shared memory %d failed: %s\n", shm_id, strerror(errno)); else shm_is_locked = 1; - #else - log_info("Locking shared memory %d failed: No way to do it\n", shm_id ); - #endif #ifdef USE_CAPABILITIES cap_set_proc( cap_from_text("cap_ipc_lock+p") ); #endif } - - #ifdef IPC_RMID_DEFERRED_RELEASE if( shmctl( shm_id, IPC_RMID, 0) ) log_fatal("shmctl IPC_RMDID of %d failed: %s\n", @@ -245,13 +237,59 @@ init_shm_coprocessing ( ulong requested_shm_size, int lock_mem ) shm_id, strerror(errno)); } + #else /* this is the new code which handles the changes in the SHM semantics + * introduced with Linux 2.4. The changes is that we now change the + * permissions and then attach to the memory. + */ + + if( lock_mem ) { + #ifdef USE_CAPABILITIES + cap_set_proc( cap_from_text("cap_ipc_lock+ep") ); + #endif + #ifdef IPC_HAVE_SHM_LOCK + if ( shmctl (shm_id, SHM_LOCK, 0) ) + log_info("locking shared memory %d failed: %s\n", + shm_id, strerror(errno)); + else + shm_is_locked = 1; + #else + log_info("Locking shared memory %d failed: No way to do it\n", shm_id ); + #endif + #ifdef USE_CAPABILITIES + cap_set_proc( cap_from_text("cap_ipc_lock+p") ); + #endif + } + + if( shmctl( shm_id, IPC_STAT, &shmds ) ) + log_fatal("shmctl IPC_STAT of %d failed: %s\n", + shm_id, strerror(errno)); + if( shmds.shm_perm.uid != getuid() ) { + shmds.shm_perm.uid = getuid(); + if( shmctl( shm_id, IPC_SET, &shmds ) ) + log_fatal("shmctl IPC_SET of %d failed: %s\n", + shm_id, strerror(errno)); + } + + shm_area = shmat( shm_id, 0, 0 ); + if ( shm_area == (char*)-1 ) + log_fatal("can't attach %uk shared memory: %s\n", + (unsigned)shm_size/1024, strerror(errno)); + log_debug("mapped %uk shared memory at %p, id=%d\n", + (unsigned)shm_size/1024, shm_area, shm_id ); + + #ifdef IPC_RMID_DEFERRED_RELEASE + if( shmctl( shm_id, IPC_RMID, 0) ) + log_fatal("shmctl IPC_RMDID of %d failed: %s\n", + shm_id, strerror(errno)); + #endif + + #endif /* write info; Protocol version, id, size, locked size */ sprintf( buf, "pv=1 pid=%d shmid=%d sz=%u lz=%u", (int)getpid(), shm_id, (unsigned)shm_size, shm_is_locked? (unsigned)shm_size:0 ); write_status_text( STATUS_SHM_INFO, buf ); } - /**************** * Request a string from client * If bool, returns static string on true (do not free) or NULL for false |