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-rw-r--r--nsprpub/pr/src/md/unix/uxshm.c643
1 files changed, 643 insertions, 0 deletions
diff --git a/nsprpub/pr/src/md/unix/uxshm.c b/nsprpub/pr/src/md/unix/uxshm.c
new file mode 100644
index 000000000..dec4e3a7a
--- /dev/null
+++ b/nsprpub/pr/src/md/unix/uxshm.c
@@ -0,0 +1,643 @@
+/* -*- 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() */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 13:09:02 +0000