| Index: mozilla/nsprpub/pr/src/md/unix/uxshm.c
|
| ===================================================================
|
| --- mozilla/nsprpub/pr/src/md/unix/uxshm.c (revision 191424)
|
| +++ mozilla/nsprpub/pr/src/md/unix/uxshm.c (working copy)
|
| @@ -1,643 +0,0 @@
|
| -/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
| -/* This Source Code Form is subject to the terms of the Mozilla Public
|
| - * License, v. 2.0. If a copy of the MPL was not distributed with this
|
| - * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
| -
|
| -/*
|
| -** uxshm.c -- Unix Implementations NSPR Named Shared Memory
|
| -**
|
| -**
|
| -** lth. Jul-1999.
|
| -**
|
| -*/
|
| -#include <string.h>
|
| -#include <prshm.h>
|
| -#include <prerr.h>
|
| -#include <prmem.h>
|
| -#include "primpl.h"
|
| -#include <fcntl.h>
|
| -
|
| -extern PRLogModuleInfo *_pr_shm_lm;
|
| -
|
| -
|
| -#define NSPR_IPC_SHM_KEY 'b'
|
| -/*
|
| -** Implementation for System V
|
| -*/
|
| -#if defined PR_HAVE_SYSV_NAMED_SHARED_MEMORY
|
| -#include <sys/ipc.h>
|
| -#include <sys/shm.h>
|
| -#include <sys/types.h>
|
| -#include <sys/stat.h>
|
| -
|
| -#define _MD_OPEN_SHARED_MEMORY _MD_OpenSharedMemory
|
| -#define _MD_ATTACH_SHARED_MEMORY _MD_AttachSharedMemory
|
| -#define _MD_DETACH_SHARED_MEMORY _MD_DetachSharedMemory
|
| -#define _MD_CLOSE_SHARED_MEMORY _MD_CloseSharedMemory
|
| -#define _MD_DELETE_SHARED_MEMORY _MD_DeleteSharedMemory
|
| -
|
| -extern PRSharedMemory * _MD_OpenSharedMemory(
|
| - const char *name,
|
| - PRSize size,
|
| - PRIntn flags,
|
| - PRIntn mode
|
| -)
|
| -{
|
| - PRStatus rc = PR_SUCCESS;
|
| - key_t key;
|
| - PRSharedMemory *shm;
|
| - char ipcname[PR_IPC_NAME_SIZE];
|
| -
|
| - rc = _PR_MakeNativeIPCName( name, ipcname, PR_IPC_NAME_SIZE, _PRIPCShm );
|
| - if ( PR_FAILURE == rc )
|
| - {
|
| - _PR_MD_MAP_DEFAULT_ERROR( errno );
|
| - PR_LOG( _pr_shm_lm, PR_LOG_DEBUG,
|
| - ("_MD_OpenSharedMemory(): _PR_MakeNativeIPCName() failed: %s", name ));
|
| - return( NULL );
|
| - }
|
| -
|
| - shm = PR_NEWZAP( PRSharedMemory );
|
| - if ( NULL == shm )
|
| - {
|
| - PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0 );
|
| - PR_LOG(_pr_shm_lm, PR_LOG_DEBUG, ( "PR_OpenSharedMemory: New PRSharedMemory out of memory"));
|
| - return( NULL );
|
| - }
|
| -
|
| - shm->ipcname = (char*)PR_MALLOC( strlen( ipcname ) + 1 );
|
| - if ( NULL == shm->ipcname )
|
| - {
|
| - PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0 );
|
| - PR_LOG(_pr_shm_lm, PR_LOG_DEBUG, ( "PR_OpenSharedMemory: New shm->ipcname out of memory"));
|
| - PR_DELETE( shm );
|
| - return( NULL );
|
| - }
|
| -
|
| - /* copy args to struct */
|
| - strcpy( shm->ipcname, ipcname );
|
| - shm->size = size;
|
| - shm->mode = mode;
|
| - shm->flags = flags;
|
| - shm->ident = _PR_SHM_IDENT;
|
| -
|
| - /* create the file first */
|
| - if ( flags & PR_SHM_CREATE ) {
|
| - int osfd = open( shm->ipcname, (O_RDWR | O_CREAT), shm->mode );
|
| - if ( -1 == osfd ) {
|
| - _PR_MD_MAP_OPEN_ERROR( errno );
|
| - PR_FREEIF( shm->ipcname );
|
| - PR_DELETE( shm );
|
| - return( NULL );
|
| - }
|
| - if ( close(osfd) == -1 ) {
|
| - _PR_MD_MAP_CLOSE_ERROR( errno );
|
| - PR_FREEIF( shm->ipcname );
|
| - PR_DELETE( shm );
|
| - return( NULL );
|
| - }
|
| - }
|
| -
|
| - /* hash the shm.name to an ID */
|
| - key = ftok( shm->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_OpenSharedMemory(): ftok() failed on name: %s", shm->ipcname));
|
| - PR_FREEIF( shm->ipcname );
|
| - PR_DELETE( shm );
|
| - return( NULL );
|
| - }
|
| -
|
| - /* get the shared memory */
|
| - if ( flags & PR_SHM_CREATE ) {
|
| - shm->id = shmget( key, shm->size, ( shm->mode | IPC_CREAT|IPC_EXCL));
|
| - if ( shm->id >= 0 ) {
|
| - return( shm );
|
| - }
|
| - if ((errno == EEXIST) && (flags & PR_SHM_EXCL)) {
|
| - PR_SetError( PR_FILE_EXISTS_ERROR, errno );
|
| - PR_LOG( _pr_shm_lm, PR_LOG_DEBUG,
|
| - ("_MD_OpenSharedMemory(): shmget() exclusive failed, errno: %d", errno));
|
| - PR_FREEIF(shm->ipcname);
|
| - PR_DELETE(shm);
|
| - return(NULL);
|
| - }
|
| - }
|
| -
|
| - shm->id = shmget( key, shm->size, shm->mode );
|
| - if ( -1 == shm->id ) {
|
| - _PR_MD_MAP_DEFAULT_ERROR( errno );
|
| - PR_LOG( _pr_shm_lm, PR_LOG_DEBUG,
|
| - ("_MD_OpenSharedMemory(): shmget() failed, errno: %d", errno));
|
| - PR_FREEIF(shm->ipcname);
|
| - PR_DELETE(shm);
|
| - return(NULL);
|
| - }
|
| -
|
| - return( shm );
|
| -} /* end _MD_OpenSharedMemory() */
|
| -
|
| -extern void * _MD_AttachSharedMemory( PRSharedMemory *shm, PRIntn flags )
|
| -{
|
| - void *addr;
|
| - PRUint32 aFlags = shm->mode;
|
| -
|
| - PR_ASSERT( shm->ident == _PR_SHM_IDENT );
|
| -
|
| - aFlags |= (flags & PR_SHM_READONLY )? SHM_RDONLY : 0;
|
| -
|
| - addr = shmat( shm->id, NULL, aFlags );
|
| - if ( (void*)-1 == addr )
|
| - {
|
| - _PR_MD_MAP_DEFAULT_ERROR( errno );
|
| - PR_LOG( _pr_shm_lm, PR_LOG_DEBUG,
|
| - ("_MD_AttachSharedMemory(): shmat() failed on name: %s, OsError: %d",
|
| - shm->ipcname, PR_GetOSError() ));
|
| - addr = NULL;
|
| - }
|
| -
|
| - return addr;
|
| -}
|
| -
|
| -extern PRStatus _MD_DetachSharedMemory( PRSharedMemory *shm, void *addr )
|
| -{
|
| - PRStatus rc = PR_SUCCESS;
|
| - PRIntn urc;
|
| -
|
| - PR_ASSERT( shm->ident == _PR_SHM_IDENT );
|
| -
|
| - urc = shmdt( addr );
|
| - if ( -1 == urc )
|
| - {
|
| - rc = PR_FAILURE;
|
| - _PR_MD_MAP_DEFAULT_ERROR( errno );
|
| - PR_LOG( _pr_shm_lm, PR_LOG_DEBUG,
|
| - ("_MD_DetachSharedMemory(): shmdt() failed on name: %s", shm->ipcname ));
|
| - }
|
| -
|
| - return rc;
|
| -}
|
| -
|
| -extern PRStatus _MD_CloseSharedMemory( PRSharedMemory *shm )
|
| -{
|
| - PR_ASSERT( shm->ident == _PR_SHM_IDENT );
|
| -
|
| - PR_FREEIF(shm->ipcname);
|
| - PR_DELETE(shm);
|
| -
|
| - return PR_SUCCESS;
|
| -}
|
| -
|
| -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() */
|
| -
|
| -/*
|
| -** Implementation for Posix
|
| -*/
|
| -#elif defined PR_HAVE_POSIX_NAMED_SHARED_MEMORY
|
| -#include <sys/mman.h>
|
| -
|
| -#define _MD_OPEN_SHARED_MEMORY _MD_OpenSharedMemory
|
| -#define _MD_ATTACH_SHARED_MEMORY _MD_AttachSharedMemory
|
| -#define _MD_DETACH_SHARED_MEMORY _MD_DetachSharedMemory
|
| -#define _MD_CLOSE_SHARED_MEMORY _MD_CloseSharedMemory
|
| -#define _MD_DELETE_SHARED_MEMORY _MD_DeleteSharedMemory
|
| -
|
| -struct _MDSharedMemory {
|
| - int handle;
|
| -};
|
| -
|
| -extern PRSharedMemory * _MD_OpenSharedMemory(
|
| - const char *name,
|
| - PRSize size,
|
| - PRIntn flags,
|
| - PRIntn mode
|
| -)
|
| -{
|
| - PRStatus rc = PR_SUCCESS;
|
| - PRInt32 end;
|
| - PRSharedMemory *shm;
|
| - 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_OpenSharedMemory(): _PR_MakeNativeIPCName() failed: %s", name ));
|
| - return( NULL );
|
| - }
|
| -
|
| - shm = PR_NEWZAP( PRSharedMemory );
|
| - if ( NULL == shm )
|
| - {
|
| - PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0 );
|
| - PR_LOG(_pr_shm_lm, PR_LOG_DEBUG, ( "PR_OpenSharedMemory: New PRSharedMemory out of memory"));
|
| - return( NULL );
|
| - }
|
| -
|
| - shm->ipcname = PR_MALLOC( strlen( ipcname ) + 1 );
|
| - if ( NULL == shm->ipcname )
|
| - {
|
| - PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0 );
|
| - PR_LOG(_pr_shm_lm, PR_LOG_DEBUG, ( "PR_OpenSharedMemory: New shm->ipcname out of memory"));
|
| - return( NULL );
|
| - }
|
| -
|
| - /* copy args to struct */
|
| - strcpy( shm->ipcname, ipcname );
|
| - shm->size = size;
|
| - shm->mode = mode;
|
| - shm->flags = flags;
|
| - shm->ident = _PR_SHM_IDENT;
|
| -
|
| - /*
|
| - ** Create the shared memory
|
| - */
|
| - if ( flags & PR_SHM_CREATE ) {
|
| - int oflag = (O_CREAT | O_RDWR);
|
| -
|
| - if ( flags & PR_SHM_EXCL )
|
| - oflag |= O_EXCL;
|
| - shm->id = shm_open( shm->ipcname, oflag, shm->mode );
|
| - } else {
|
| - shm->id = shm_open( shm->ipcname, O_RDWR, shm->mode );
|
| - }
|
| -
|
| - if ( -1 == shm->id ) {
|
| - _PR_MD_MAP_DEFAULT_ERROR( errno );
|
| - PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,
|
| - ("_MD_OpenSharedMemory(): shm_open failed: %s, OSError: %d",
|
| - shm->ipcname, PR_GetOSError()));
|
| - PR_DELETE( shm->ipcname );
|
| - PR_DELETE( shm );
|
| - return(NULL);
|
| - }
|
| -
|
| - end = ftruncate( shm->id, shm->size );
|
| - if ( -1 == end ) {
|
| - _PR_MD_MAP_DEFAULT_ERROR( errno );
|
| - PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,
|
| - ("_MD_OpenSharedMemory(): ftruncate failed, OSError: %d",
|
| - PR_GetOSError()));
|
| - PR_DELETE( shm->ipcname );
|
| - PR_DELETE( shm );
|
| - return(NULL);
|
| - }
|
| -
|
| - return(shm);
|
| -} /* end _MD_OpenSharedMemory() */
|
| -
|
| -extern void * _MD_AttachSharedMemory( PRSharedMemory *shm, PRIntn flags )
|
| -{
|
| - void *addr;
|
| - PRIntn prot = (PROT_READ | PROT_WRITE);
|
| -
|
| - PR_ASSERT( shm->ident == _PR_SHM_IDENT );
|
| -
|
| - if ( PR_SHM_READONLY == flags)
|
| - prot ^= PROT_WRITE;
|
| -
|
| - addr = mmap( (void*)0, shm->size, prot, MAP_SHARED, shm->id, 0 );
|
| - if ((void*)-1 == addr )
|
| - {
|
| - _PR_MD_MAP_DEFAULT_ERROR( errno );
|
| - PR_LOG( _pr_shm_lm, PR_LOG_DEBUG,
|
| - ("_MD_AttachSharedMemory(): mmap failed: %s, errno: %d",
|
| - shm->ipcname, PR_GetOSError()));
|
| - addr = NULL;
|
| - } else {
|
| - PR_LOG( _pr_shm_lm, PR_LOG_DEBUG,
|
| - ("_MD_AttachSharedMemory(): name: %s, attached at: %p", shm->ipcname, addr));
|
| - }
|
| -
|
| - return addr;
|
| -}
|
| -
|
| -extern PRStatus _MD_DetachSharedMemory( PRSharedMemory *shm, void *addr )
|
| -{
|
| - PRStatus rc = PR_SUCCESS;
|
| - PRIntn urc;
|
| -
|
| - PR_ASSERT( shm->ident == _PR_SHM_IDENT );
|
| -
|
| - urc = munmap( addr, shm->size );
|
| - if ( -1 == urc )
|
| - {
|
| - rc = PR_FAILURE;
|
| - _PR_MD_MAP_DEFAULT_ERROR( errno );
|
| - PR_LOG( _pr_shm_lm, PR_LOG_DEBUG,
|
| - ("_MD_DetachSharedMemory(): munmap failed: %s, errno: %d",
|
| - shm->ipcname, PR_GetOSError()));
|
| - }
|
| - return rc;
|
| -}
|
| -
|
| -extern PRStatus _MD_CloseSharedMemory( PRSharedMemory *shm )
|
| -{
|
| - int urc;
|
| -
|
| - PR_ASSERT( shm->ident == _PR_SHM_IDENT );
|
| -
|
| - urc = close( shm->id );
|
| - if ( -1 == urc ) {
|
| - _PR_MD_MAP_CLOSE_ERROR( errno );
|
| - PR_LOG( _pr_shm_lm, PR_LOG_DEBUG,
|
| - ("_MD_CloseSharedMemory(): close() failed, error: %d", PR_GetOSError()));
|
| - return(PR_FAILURE);
|
| - }
|
| - PR_DELETE( shm->ipcname );
|
| - PR_DELETE( shm );
|
| - return PR_SUCCESS;
|
| -}
|
| -
|
| -extern PRStatus _MD_DeleteSharedMemory( const char *name )
|
| -{
|
| - PRStatus rc = PR_SUCCESS;
|
| - PRUintn 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_OpenSharedMemory(): _PR_MakeNativeIPCName() failed: %s", name ));
|
| - return rc;
|
| - }
|
| -
|
| - urc = shm_unlink( ipcname );
|
| - if ( -1 == urc ) {
|
| - rc = PR_FAILURE;
|
| - _PR_MD_MAP_DEFAULT_ERROR( errno );
|
| - PR_LOG( _pr_shm_lm, PR_LOG_DEBUG,
|
| - ("_MD_DeleteSharedMemory(): shm_unlink failed: %s, errno: %d",
|
| - ipcname, PR_GetOSError()));
|
| - } else {
|
| - PR_LOG( _pr_shm_lm, PR_LOG_DEBUG,
|
| - ("_MD_DeleteSharedMemory(): %s, success", ipcname));
|
| - }
|
| -
|
| - return rc;
|
| -} /* end _MD_DeleteSharedMemory() */
|
| -#endif
|
| -
|
| -
|
| -
|
| -/*
|
| -** Unix implementation for anonymous memory (file) mapping
|
| -*/
|
| -extern PRLogModuleInfo *_pr_shma_lm;
|
| -
|
| -#include <unistd.h>
|
| -
|
| -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++ ) {
|
| -#if defined(SYMBIAN)
|
| -#define NSPR_AFM_FILENAME "%s\\NSPR-AFM-%d-%p.%d"
|
| -#else
|
| -#define NSPR_AFM_FILENAME "%s/.NSPR-AFM-%d-%p.%d"
|
| -#endif
|
| - genName = PR_smprintf( NSPR_AFM_FILENAME,
|
| - 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(SYMBIAN) && 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 PRFileMap * _md_ImportFileMapFromString(
|
| - const char *fmstring
|
| -)
|
| -{
|
| - PRStatus rc;
|
| - PRInt32 osfd;
|
| - PRIntn prot; /* really: a PRFileMapProtect */
|
| - PRFileDesc *fd;
|
| - PRFileMap *fm = NULL; /* default return value */
|
| - PRFileInfo64 info;
|
| -
|
| - PR_sscanf( fmstring, "%ld:%d", &osfd, &prot );
|
| -
|
| - /* import the os file descriptor */
|
| - fd = PR_ImportFile( osfd );
|
| - if ( NULL == fd ) {
|
| - PR_LOG( _pr_shma_lm, PR_LOG_DEBUG,
|
| - ("_md_ImportFileMapFromString(): PR_ImportFile() failed"));
|
| - goto Finished;
|
| - }
|
| -
|
| - rc = PR_GetOpenFileInfo64( fd, &info );
|
| - if ( PR_FAILURE == rc ) {
|
| - PR_LOG( _pr_shma_lm, PR_LOG_DEBUG,
|
| - ("_md_ImportFileMapFromString(): PR_GetOpenFileInfo64() failed"));
|
| - goto Finished;
|
| - }
|
| -
|
| - fm = PR_CreateFileMap( fd, info.size, (PRFileMapProtect)prot );
|
| - if ( NULL == fm ) {
|
| - PR_LOG( _pr_shma_lm, PR_LOG_DEBUG,
|
| - ("_md_ImportFileMapFromString(): PR_CreateFileMap() failed"));
|
| - }
|
| -
|
| -Finished:
|
| - return(fm);
|
| -} /* end _md_ImportFileMapFromString() */
|
|
|