PR_IMPLEMENT(PRInt32) _amigaos_Delete(const char *name) { PRInt32 rv; rv = unlink(name); if (rv < 0) { _PR_MD_MAP_UNLINK_ERROR(_MD_ERRNO()); } return rv; }
PR_IMPLEMENT(PRStatus) PR_DeleteSemaphore(const char *name) { key_t key; int semid; /* On some systems (e.g., glibc 2.0) semctl requires a fourth argument */ union semun unused; char osname[PR_IPC_NAME_SIZE]; if (_PR_MakeNativeIPCName(name, osname, sizeof(osname), _PRIPCSem) == PR_FAILURE) { return PR_FAILURE; } key = ftok(osname, NSPR_IPC_KEY_ID); if ((key_t) -1 == key) { _PR_MD_MAP_DEFAULT_ERROR(errno); return PR_FAILURE; } if (unlink(osname) == -1) { _PR_MD_MAP_UNLINK_ERROR(errno); return PR_FAILURE; } semid = semget(key, 1, NSPR_SEM_MODE); if (-1 == semid) { _PR_MD_MAP_DEFAULT_ERROR(errno); return PR_FAILURE; } unused.val = 0; if (semctl(semid, 0, IPC_RMID, unused) == -1) { _PR_MD_MAP_DEFAULT_ERROR(errno); return PR_FAILURE; } return PR_SUCCESS; }
extern PRFileMap* _md_OpenAnonFileMap( const char *dirName, PRSize size, PRFileMapProtect prot ) { PRFileMap *fm = NULL; PRFileDesc *fd; int osfd; PRIntn urc; PRIntn mode = 0600; char *genName; pid_t pid = getpid(); /* for generating filename */ PRThread *tid = PR_GetCurrentThread(); /* for generating filename */ int incr; /* for generating filename */ const int maxTries = 20; /* maximum # attempts at a unique filename */ PRInt64 size64; /* 64-bit version of 'size' */ /* ** generate a filename from input and runtime environment ** open the file, unlink the file. ** make maxTries number of attempts at uniqueness in the filename */ for ( incr = 0; incr < maxTries ; incr++ ) { #ifdef SYMBIAN genName = PR_smprintf( "%s\\NSPR-AFM-%d-%p.%d", #else genName = PR_smprintf( "%s/.NSPR-AFM-%d-%p.%d", #endif dirName, (int) pid, tid, incr ); if ( NULL == genName ) { PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, ("_md_OpenAnonFileMap(): PR_snprintf(): failed, generating filename")); goto Finished; } /* create the file */ osfd = open( genName, (O_CREAT | O_EXCL | O_RDWR), mode ); if ( -1 == osfd ) { if ( EEXIST == errno ) { PR_smprintf_free( genName ); continue; /* name exists, try again */ } else { _PR_MD_MAP_OPEN_ERROR( errno ); PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, ("_md_OpenAnonFileMap(): open(): failed, filename: %s, errno: %d", genName, PR_GetOSError())); PR_smprintf_free( genName ); goto Finished; } } break; /* name generation and open successful, break; */ } /* end for() */ if ( incr == maxTries ) { PR_ASSERT( -1 == osfd ); PR_ASSERT( EEXIST == errno ); _PR_MD_MAP_OPEN_ERROR( errno ); goto Finished; } urc = unlink( genName ); #if defined(__WINS__) /* If it is being used by the system or another process, Symbian OS Emulator(WINS) considers this an error. */ if ( -1 == urc && EACCES != errno ) { #else if ( -1 == urc ) { #endif _PR_MD_MAP_UNLINK_ERROR( errno ); PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, ("_md_OpenAnonFileMap(): failed on unlink(), errno: %d", errno)); PR_smprintf_free( genName ); close( osfd ); goto Finished; } PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, ("_md_OpenAnonFileMap(): unlink(): %s", genName )); PR_smprintf_free( genName ); fd = PR_ImportFile( osfd ); if ( NULL == fd ) { PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, ("_md_OpenAnonFileMap(): PR_ImportFile(): failed")); goto Finished; } PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, ("_md_OpenAnonFileMap(): fd: %p", fd )); urc = ftruncate( fd->secret->md.osfd, size ); if ( -1 == urc ) { _PR_MD_MAP_DEFAULT_ERROR( errno ); PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, ("_md_OpenAnonFileMap(): failed on ftruncate(), errno: %d", errno)); PR_Close( fd ); goto Finished; } PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, ("_md_OpenAnonFileMap(): ftruncate(): size: %d", size )); LL_UI2L(size64, size); /* PRSize (size_t) is unsigned */ fm = PR_CreateFileMap( fd, size64, prot ); if ( NULL == fm ) { PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, ("PR_OpenAnonFileMap(): failed")); PR_Close( fd ); goto Finished; } fm->md.isAnonFM = PR_TRUE; /* set fd close */ PR_LOG( _pr_shma_lm, PR_LOG_DEBUG, ("_md_OpenAnonFileMap(): PR_CreateFileMap(): fm: %p", fm )); Finished: return(fm); } /* end md_OpenAnonFileMap() */ /* ** _md_ExportFileMapAsString() ** ** */ extern PRStatus _md_ExportFileMapAsString( PRFileMap *fm, PRSize bufSize, char *buf ) { PRIntn written; PRIntn prot = (PRIntn)fm->prot; written = PR_snprintf( buf, bufSize, "%ld:%d", fm->fd->secret->md.osfd, prot ); return((written == -1)? PR_FAILURE : PR_SUCCESS); } /* end _md_ExportFileMapAsString() */
extern PRStatus _MD_DeleteSharedMemory( const char *name ) { PRStatus rc = PR_SUCCESS; key_t key; int id; PRIntn urc; char ipcname[PR_IPC_NAME_SIZE]; rc = _PR_MakeNativeIPCName( name, ipcname, PR_IPC_NAME_SIZE, _PRIPCShm ); if ( PR_FAILURE == rc ) { PR_SetError( PR_UNKNOWN_ERROR , errno ); PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, ("_MD_DeleteSharedMemory(): _PR_MakeNativeIPCName() failed: %s", name )); return(PR_FAILURE); } /* create the file first */ { int osfd = open( ipcname, (O_RDWR | O_CREAT), 0666 ); if ( -1 == osfd ) { _PR_MD_MAP_OPEN_ERROR( errno ); return( PR_FAILURE ); } if ( close(osfd) == -1 ) { _PR_MD_MAP_CLOSE_ERROR( errno ); return( PR_FAILURE ); } } /* hash the shm.name to an ID */ key = ftok( ipcname, NSPR_IPC_SHM_KEY ); if ( -1 == key ) { rc = PR_FAILURE; _PR_MD_MAP_DEFAULT_ERROR( errno ); PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, ("_MD_DeleteSharedMemory(): ftok() failed on name: %s", ipcname)); } #ifdef SYMBIAN /* In Symbian OS the system imposed minimum is 1 byte, instead of ZERO */ id = shmget( key, 1, 0 ); #else id = shmget( key, 0, 0 ); #endif if ( -1 == id ) { _PR_MD_MAP_DEFAULT_ERROR( errno ); PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, ("_MD_DeleteSharedMemory(): shmget() failed, errno: %d", errno)); return(PR_FAILURE); } urc = shmctl( id, IPC_RMID, NULL ); if ( -1 == urc ) { _PR_MD_MAP_DEFAULT_ERROR( errno ); PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, ("_MD_DeleteSharedMemory(): shmctl() failed on name: %s", ipcname )); return(PR_FAILURE); } urc = unlink( ipcname ); if ( -1 == urc ) { _PR_MD_MAP_UNLINK_ERROR( errno ); PR_LOG( _pr_shm_lm, PR_LOG_DEBUG, ("_MD_DeleteSharedMemory(): unlink() failed: %s", ipcname )); return(PR_FAILURE); } return rc; } /* end _MD_DeleteSharedMemory() */