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() */ |