Bug Summary

File:root/firefox-clang/nsprpub/pr/src/md/unix/uxshm.c
Warning:line 98, column 5
Value stored to 'rc' is never read

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name Unified_c_external_nspr_pr1.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -fhalf-no-semantic-interposition -mframe-pointer=all -relaxed-aliasing -ffp-contract=off -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/root/firefox-clang/obj-x86_64-pc-linux-gnu/config/external/nspr/pr -fcoverage-compilation-dir=/root/firefox-clang/obj-x86_64-pc-linux-gnu/config/external/nspr/pr -resource-dir /usr/lib/llvm-21/lib/clang/21 -include /root/firefox-clang/config/gcc_hidden.h -include /root/firefox-clang/obj-x86_64-pc-linux-gnu/mozilla-config.h -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dist/system_wrappers -U _FORTIFY_SOURCE -D _FORTIFY_SOURCE=2 -D _GLIBCXX_ASSERTIONS -D DEBUG=1 -D _NSPR_BUILD_ -D LINUX -D HAVE_FCNTL_FILE_LOCKING -D HAVE_POINTER_LOCALTIME_R -D _GNU_SOURCE -D _PR_PTHREADS -I /root/firefox-clang/config/external/nspr/pr -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/config/external/nspr/pr -I /root/firefox-clang/config/external/nspr -I /root/firefox-clang/nsprpub/pr/include -I /root/firefox-clang/nsprpub/pr/include/private -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dist/include -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dist/include/nspr -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dist/include/nss -D MOZILLA_CLIENT -internal-isystem /usr/lib/llvm-21/lib/clang/21/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-error=tautological-type-limit-compare -Wno-range-loop-analysis -Wno-error=deprecated-declarations -Wno-error=array-bounds -Wno-error=free-nonheap-object -Wno-error=atomic-alignment -Wno-error=deprecated-builtins -Wno-psabi -Wno-error=builtin-macro-redefined -Wno-unknown-warning-option -ferror-limit 19 -fstrict-flex-arrays=1 -stack-protector 2 -fstack-clash-protection -ftrivial-auto-var-init=pattern -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -vectorize-loops -vectorize-slp -analyzer-checker optin.performance.Padding -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/scan-build-2025-06-27-100320-3286336-1 -x c Unified_c_external_nspr_pr1.c
1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2/* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
5
6/*
7** uxshm.c -- Unix Implementations NSPR Named Shared Memory
8**
9**
10** lth. Jul-1999.
11**
12*/
13#include <string.h>
14#include <prshm.h>
15#include <prerr.h>
16#include <prmem.h>
17#include "primpl.h"
18#include <fcntl.h>
19
20extern PRLogModuleInfo* _pr_shm_lm;
21
22#define NSPR_IPC_SHM_KEY'b' 'b'
23/*
24** Implementation for System V
25*/
26#if defined PR_HAVE_SYSV_NAMED_SHARED_MEMORY
27# include <sys/ipc.h>
28# include <sys/shm.h>
29# include <sys/types.h>
30# include <sys/stat.h>
31
32# define _MD_OPEN_SHARED_MEMORY_MD_OpenSharedMemory _MD_OpenSharedMemory
33# define _MD_ATTACH_SHARED_MEMORY_MD_AttachSharedMemory _MD_AttachSharedMemory
34# define _MD_DETACH_SHARED_MEMORY_MD_DetachSharedMemory _MD_DetachSharedMemory
35# define _MD_CLOSE_SHARED_MEMORY_MD_CloseSharedMemory _MD_CloseSharedMemory
36# define _MD_DELETE_SHARED_MEMORY_MD_DeleteSharedMemory _MD_DeleteSharedMemory
37
38extern PRSharedMemory* _MD_OpenSharedMemory(const char* name, PRSize size,
39 PRIntn flags, PRIntn mode) {
40 PRStatus rc = PR_SUCCESS;
41 key_t key;
42 PRSharedMemory* shm;
43 char ipcname[PR_IPC_NAME_SIZE1024];
44
45 rc = _PR_MakeNativeIPCName(name, ipcname, PR_IPC_NAME_SIZE1024, _PRIPCShm);
46 if (PR_FAILURE == rc) {
47 _PR_MD_MAP_DEFAULT_ERROR_MD_unix_map_default_error(errno(*__errno_location ()));
48 PR_LOG(do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): _PR_MakeNativeIPCName() failed: %s"
, name); } } while (0)
49 _pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): _PR_MakeNativeIPCName() failed: %s"
, name); } } while (0)
50 ("_MD_OpenSharedMemory(): _PR_MakeNativeIPCName() failed: %s", name))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): _PR_MakeNativeIPCName() failed: %s"
, name); } } while (0);
51 return (NULL((void*)0));
52 }
53
54 shm = PR_NEWZAP(PRSharedMemory)((PRSharedMemory*)PR_Calloc(1, sizeof(PRSharedMemory)));
55 if (NULL((void*)0) == shm) {
56 PR_SetError(PR_OUT_OF_MEMORY_ERROR(-6000L), 0);
57 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("PR_OpenSharedMemory: New PRSharedMemory out of memory"); }
} while (0)
58 ("PR_OpenSharedMemory: New PRSharedMemory out of memory"))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("PR_OpenSharedMemory: New PRSharedMemory out of memory"); }
} while (0);
59 return (NULL((void*)0));
60 }
61
62 shm->ipcname = (char*)PR_MALLOC(strlen(ipcname) + 1)(PR_Malloc((strlen(ipcname) + 1)));
63 if (NULL((void*)0) == shm->ipcname) {
64 PR_SetError(PR_OUT_OF_MEMORY_ERROR(-6000L), 0);
65 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("PR_OpenSharedMemory: New shm->ipcname out of memory"); }
} while (0)
66 ("PR_OpenSharedMemory: New shm->ipcname out of memory"))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("PR_OpenSharedMemory: New shm->ipcname out of memory"); }
} while (0);
67 PR_DELETE(shm){ PR_Free(shm); (shm) = ((void*)0); };
68 return (NULL((void*)0));
69 }
70
71 /* copy args to struct */
72 strcpy(shm->ipcname, ipcname);
73 shm->size = size;
74 shm->mode = mode;
75 shm->flags = flags;
76 shm->ident = _PR_SHM_IDENT0xdeadbad;
77
78 /* create the file first */
79 if (flags & PR_SHM_CREATE0x1) {
80 int osfd = open(shm->ipcname, (O_RDWR02 | O_CREAT0100), shm->mode);
81 if (-1 == osfd) {
82 _PR_MD_MAP_OPEN_ERROR_MD_unix_map_open_error(errno(*__errno_location ()));
83 PR_FREEIF(shm->ipcname)if (shm->ipcname) { PR_Free(shm->ipcname); (shm->ipcname
) = ((void*)0); };
84 PR_DELETE(shm){ PR_Free(shm); (shm) = ((void*)0); };
85 return (NULL((void*)0));
86 }
87 if (close(osfd) == -1) {
88 _PR_MD_MAP_CLOSE_ERROR_MD_unix_map_close_error(errno(*__errno_location ()));
89 PR_FREEIF(shm->ipcname)if (shm->ipcname) { PR_Free(shm->ipcname); (shm->ipcname
) = ((void*)0); };
90 PR_DELETE(shm){ PR_Free(shm); (shm) = ((void*)0); };
91 return (NULL((void*)0));
92 }
93 }
94
95 /* hash the shm.name to an ID */
96 key = ftok(shm->ipcname, NSPR_IPC_SHM_KEY'b');
97 if (-1 == key) {
98 rc = PR_FAILURE;
Value stored to 'rc' is never read
99 _PR_MD_MAP_DEFAULT_ERROR_MD_unix_map_default_error(errno(*__errno_location ()));
100 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): ftok() failed on name: %s", shm->
ipcname); } } while (0)
101 ("_MD_OpenSharedMemory(): ftok() failed on name: %s", shm->ipcname))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): ftok() failed on name: %s", shm->
ipcname); } } while (0);
102 PR_FREEIF(shm->ipcname)if (shm->ipcname) { PR_Free(shm->ipcname); (shm->ipcname
) = ((void*)0); };
103 PR_DELETE(shm){ PR_Free(shm); (shm) = ((void*)0); };
104 return (NULL((void*)0));
105 }
106
107 /* get the shared memory */
108 if (flags & PR_SHM_CREATE0x1) {
109 shm->id = shmget(key, shm->size, (shm->mode | IPC_CREAT01000 | IPC_EXCL02000));
110 if (shm->id >= 0) {
111 return (shm);
112 }
113 if ((errno(*__errno_location ()) == EEXIST17) && (flags & PR_SHM_EXCL0x2)) {
114 PR_SetError(PR_FILE_EXISTS_ERROR(-5943L), errno(*__errno_location ()));
115 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): shmget() exclusive failed, errno: %d"
, (*__errno_location ())); } } while (0)
116 ("_MD_OpenSharedMemory(): shmget() exclusive failed, errno: %d",do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): shmget() exclusive failed, errno: %d"
, (*__errno_location ())); } } while (0)
117 errno))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): shmget() exclusive failed, errno: %d"
, (*__errno_location ())); } } while (0);
118 PR_FREEIF(shm->ipcname)if (shm->ipcname) { PR_Free(shm->ipcname); (shm->ipcname
) = ((void*)0); };
119 PR_DELETE(shm){ PR_Free(shm); (shm) = ((void*)0); };
120 return (NULL((void*)0));
121 }
122 }
123
124 shm->id = shmget(key, shm->size, shm->mode);
125 if (-1 == shm->id) {
126 _PR_MD_MAP_DEFAULT_ERROR_MD_unix_map_default_error(errno(*__errno_location ()));
127 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): shmget() failed, errno: %d", (*__errno_location
())); } } while (0)
128 ("_MD_OpenSharedMemory(): shmget() failed, errno: %d", errno))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): shmget() failed, errno: %d", (*__errno_location
())); } } while (0);
129 PR_FREEIF(shm->ipcname)if (shm->ipcname) { PR_Free(shm->ipcname); (shm->ipcname
) = ((void*)0); };
130 PR_DELETE(shm){ PR_Free(shm); (shm) = ((void*)0); };
131 return (NULL((void*)0));
132 }
133
134 return (shm);
135} /* end _MD_OpenSharedMemory() */
136
137extern void* _MD_AttachSharedMemory(PRSharedMemory* shm, PRIntn flags) {
138 void* addr;
139 PRUint32 aFlags = shm->mode;
140
141 PR_ASSERT(shm->ident == _PR_SHM_IDENT)((shm->ident == 0xdeadbad)?((void)0):PR_Assert("shm->ident == _PR_SHM_IDENT"
,"/root/firefox-clang/nsprpub/pr/src/md/unix/uxshm.c",141));
142
143 aFlags |= (flags & PR_SHM_READONLY0x01) ? SHM_RDONLY010000 : 0;
144
145 addr = shmat(shm->id, NULL((void*)0), aFlags);
146 if ((void*)-1 == addr) {
147 _PR_MD_MAP_DEFAULT_ERROR_MD_unix_map_default_error(errno(*__errno_location ()));
148 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_AttachSharedMemory(): shmat() failed on name: %s, OsError: %d"
, shm->ipcname, PR_GetOSError()); } } while (0)
149 ("_MD_AttachSharedMemory(): shmat() failed on name: %s, OsError: %d",do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_AttachSharedMemory(): shmat() failed on name: %s, OsError: %d"
, shm->ipcname, PR_GetOSError()); } } while (0)
150 shm->ipcname, PR_GetOSError()))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_AttachSharedMemory(): shmat() failed on name: %s, OsError: %d"
, shm->ipcname, PR_GetOSError()); } } while (0);
151 addr = NULL((void*)0);
152 }
153
154 return addr;
155}
156
157extern PRStatus _MD_DetachSharedMemory(PRSharedMemory* shm, void* addr) {
158 PRStatus rc = PR_SUCCESS;
159 PRIntn urc;
160
161 PR_ASSERT(shm->ident == _PR_SHM_IDENT)((shm->ident == 0xdeadbad)?((void)0):PR_Assert("shm->ident == _PR_SHM_IDENT"
,"/root/firefox-clang/nsprpub/pr/src/md/unix/uxshm.c",161));
162
163 urc = shmdt(addr);
164 if (-1 == urc) {
165 rc = PR_FAILURE;
166 _PR_MD_MAP_DEFAULT_ERROR_MD_unix_map_default_error(errno(*__errno_location ()));
167 PR_LOG(do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DetachSharedMemory(): shmdt() failed on name: %s", shm
->ipcname); } } while (0)
168 _pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DetachSharedMemory(): shmdt() failed on name: %s", shm
->ipcname); } } while (0)
169 ("_MD_DetachSharedMemory(): shmdt() failed on name: %s", shm->ipcname))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DetachSharedMemory(): shmdt() failed on name: %s", shm
->ipcname); } } while (0);
170 }
171
172 return rc;
173}
174
175extern PRStatus _MD_CloseSharedMemory(PRSharedMemory* shm) {
176 PR_ASSERT(shm->ident == _PR_SHM_IDENT)((shm->ident == 0xdeadbad)?((void)0):PR_Assert("shm->ident == _PR_SHM_IDENT"
,"/root/firefox-clang/nsprpub/pr/src/md/unix/uxshm.c",176));
177
178 PR_FREEIF(shm->ipcname)if (shm->ipcname) { PR_Free(shm->ipcname); (shm->ipcname
) = ((void*)0); };
179 PR_DELETE(shm){ PR_Free(shm); (shm) = ((void*)0); };
180
181 return PR_SUCCESS;
182}
183
184extern PRStatus _MD_DeleteSharedMemory(const char* name) {
185 PRStatus rc = PR_SUCCESS;
186 key_t key;
187 int id;
188 PRIntn urc;
189 char ipcname[PR_IPC_NAME_SIZE1024];
190
191 rc = _PR_MakeNativeIPCName(name, ipcname, PR_IPC_NAME_SIZE1024, _PRIPCShm);
192 if (PR_FAILURE == rc) {
193 PR_SetError(PR_UNKNOWN_ERROR(-5994L), errno(*__errno_location ()));
194 PR_LOG(do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DeleteSharedMemory(): _PR_MakeNativeIPCName() failed: %s"
, name); } } while (0)
195 _pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DeleteSharedMemory(): _PR_MakeNativeIPCName() failed: %s"
, name); } } while (0)
196 ("_MD_DeleteSharedMemory(): _PR_MakeNativeIPCName() failed: %s", name))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DeleteSharedMemory(): _PR_MakeNativeIPCName() failed: %s"
, name); } } while (0);
197 return (PR_FAILURE);
198 }
199
200 /* create the file first */
201 {
202 int osfd = open(ipcname, (O_RDWR02 | O_CREAT0100), 0666);
203 if (-1 == osfd) {
204 _PR_MD_MAP_OPEN_ERROR_MD_unix_map_open_error(errno(*__errno_location ()));
205 return (PR_FAILURE);
206 }
207 if (close(osfd) == -1) {
208 _PR_MD_MAP_CLOSE_ERROR_MD_unix_map_close_error(errno(*__errno_location ()));
209 return (PR_FAILURE);
210 }
211 }
212
213 /* hash the shm.name to an ID */
214 key = ftok(ipcname, NSPR_IPC_SHM_KEY'b');
215 if (-1 == key) {
216 rc = PR_FAILURE;
217 _PR_MD_MAP_DEFAULT_ERROR_MD_unix_map_default_error(errno(*__errno_location ()));
218 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DeleteSharedMemory(): ftok() failed on name: %s", ipcname
); } } while (0)
219 ("_MD_DeleteSharedMemory(): ftok() failed on name: %s", ipcname))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DeleteSharedMemory(): ftok() failed on name: %s", ipcname
); } } while (0);
220 }
221
222 id = shmget(key, 0, 0);
223 if (-1 == id) {
224 _PR_MD_MAP_DEFAULT_ERROR_MD_unix_map_default_error(errno(*__errno_location ()));
225 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DeleteSharedMemory(): shmget() failed, errno: %d", (*__errno_location
())); } } while (0)
226 ("_MD_DeleteSharedMemory(): shmget() failed, errno: %d", errno))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DeleteSharedMemory(): shmget() failed, errno: %d", (*__errno_location
())); } } while (0);
227 return (PR_FAILURE);
228 }
229
230 urc = shmctl(id, IPC_RMID0, NULL((void*)0));
231 if (-1 == urc) {
232 _PR_MD_MAP_DEFAULT_ERROR_MD_unix_map_default_error(errno(*__errno_location ()));
233 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DeleteSharedMemory(): shmctl() failed on name: %s", ipcname
); } } while (0)
234 ("_MD_DeleteSharedMemory(): shmctl() failed on name: %s", ipcname))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DeleteSharedMemory(): shmctl() failed on name: %s", ipcname
); } } while (0);
235 return (PR_FAILURE);
236 }
237
238 urc = unlink(ipcname);
239 if (-1 == urc) {
240 _PR_MD_MAP_UNLINK_ERROR_MD_unix_map_unlink_error(errno(*__errno_location ()));
241 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DeleteSharedMemory(): unlink() failed: %s", ipcname); }
} while (0)
242 ("_MD_DeleteSharedMemory(): unlink() failed: %s", ipcname))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DeleteSharedMemory(): unlink() failed: %s", ipcname); }
} while (0);
243 return (PR_FAILURE);
244 }
245
246 return rc;
247} /* end _MD_DeleteSharedMemory() */
248
249/*
250** Implementation for Posix
251*/
252#elif defined PR_HAVE_POSIX_NAMED_SHARED_MEMORY
253# include <sys/mman.h>
254
255# define _MD_OPEN_SHARED_MEMORY_MD_OpenSharedMemory _MD_OpenSharedMemory
256# define _MD_ATTACH_SHARED_MEMORY_MD_AttachSharedMemory _MD_AttachSharedMemory
257# define _MD_DETACH_SHARED_MEMORY_MD_DetachSharedMemory _MD_DetachSharedMemory
258# define _MD_CLOSE_SHARED_MEMORY_MD_CloseSharedMemory _MD_CloseSharedMemory
259# define _MD_DELETE_SHARED_MEMORY_MD_DeleteSharedMemory _MD_DeleteSharedMemory
260
261struct _MDSharedMemory {
262 int handle;
263};
264
265extern PRSharedMemory* _MD_OpenSharedMemory(const char* name, PRSize size,
266 PRIntn flags, PRIntn mode) {
267 PRStatus rc = PR_SUCCESS;
268 PRInt32 end;
269 PRSharedMemory* shm;
270 char ipcname[PR_IPC_NAME_SIZE1024];
271
272 rc = _PR_MakeNativeIPCName(name, ipcname, PR_IPC_NAME_SIZE1024, _PRIPCShm);
273 if (PR_FAILURE == rc) {
274 PR_SetError(PR_UNKNOWN_ERROR(-5994L), errno(*__errno_location ()));
275 PR_LOG(do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): _PR_MakeNativeIPCName() failed: %s"
, name); } } while (0)
276 _pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): _PR_MakeNativeIPCName() failed: %s"
, name); } } while (0)
277 ("_MD_OpenSharedMemory(): _PR_MakeNativeIPCName() failed: %s", name))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): _PR_MakeNativeIPCName() failed: %s"
, name); } } while (0);
278 return (NULL((void*)0));
279 }
280
281 shm = PR_NEWZAP(PRSharedMemory)((PRSharedMemory*)PR_Calloc(1, sizeof(PRSharedMemory)));
282 if (NULL((void*)0) == shm) {
283 PR_SetError(PR_OUT_OF_MEMORY_ERROR(-6000L), 0);
284 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("PR_OpenSharedMemory: New PRSharedMemory out of memory"); }
} while (0)
285 ("PR_OpenSharedMemory: New PRSharedMemory out of memory"))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("PR_OpenSharedMemory: New PRSharedMemory out of memory"); }
} while (0);
286 return (NULL((void*)0));
287 }
288
289 shm->ipcname = PR_MALLOC(strlen(ipcname) + 1)(PR_Malloc((strlen(ipcname) + 1)));
290 if (NULL((void*)0) == shm->ipcname) {
291 PR_SetError(PR_OUT_OF_MEMORY_ERROR(-6000L), 0);
292 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("PR_OpenSharedMemory: New shm->ipcname out of memory"); }
} while (0)
293 ("PR_OpenSharedMemory: New shm->ipcname out of memory"))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("PR_OpenSharedMemory: New shm->ipcname out of memory"); }
} while (0);
294 return (NULL((void*)0));
295 }
296
297 /* copy args to struct */
298 strcpy(shm->ipcname, ipcname);
299 shm->size = size;
300 shm->mode = mode;
301 shm->flags = flags;
302 shm->ident = _PR_SHM_IDENT0xdeadbad;
303
304 /*
305 ** Create the shared memory
306 */
307 if (flags & PR_SHM_CREATE0x1) {
308 int oflag = (O_CREAT0100 | O_RDWR02);
309
310 if (flags & PR_SHM_EXCL0x2) {
311 oflag |= O_EXCL0200;
312 }
313 shm->id = shm_open(shm->ipcname, oflag, shm->mode);
314 } else {
315 shm->id = shm_open(shm->ipcname, O_RDWR02, shm->mode);
316 }
317
318 if (-1 == shm->id) {
319 _PR_MD_MAP_DEFAULT_ERROR_MD_unix_map_default_error(errno(*__errno_location ()));
320 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): shm_open failed: %s, OSError: %d",
shm->ipcname, PR_GetOSError()); } } while (0)
321 ("_MD_OpenSharedMemory(): shm_open failed: %s, OSError: %d",do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): shm_open failed: %s, OSError: %d",
shm->ipcname, PR_GetOSError()); } } while (0)
322 shm->ipcname, PR_GetOSError()))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): shm_open failed: %s, OSError: %d",
shm->ipcname, PR_GetOSError()); } } while (0);
323 PR_DELETE(shm->ipcname){ PR_Free(shm->ipcname); (shm->ipcname) = ((void*)0); };
324 PR_DELETE(shm){ PR_Free(shm); (shm) = ((void*)0); };
325 return (NULL((void*)0));
326 }
327
328 end = ftruncate(shm->id, shm->size);
329 if (-1 == end) {
330 _PR_MD_MAP_DEFAULT_ERROR_MD_unix_map_default_error(errno(*__errno_location ()));
331 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): ftruncate failed, OSError: %d", PR_GetOSError
()); } } while (0)
332 ("_MD_OpenSharedMemory(): ftruncate failed, OSError: %d",do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): ftruncate failed, OSError: %d", PR_GetOSError
()); } } while (0)
333 PR_GetOSError()))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): ftruncate failed, OSError: %d", PR_GetOSError
()); } } while (0);
334 PR_DELETE(shm->ipcname){ PR_Free(shm->ipcname); (shm->ipcname) = ((void*)0); };
335 PR_DELETE(shm){ PR_Free(shm); (shm) = ((void*)0); };
336 return (NULL((void*)0));
337 }
338
339 return (shm);
340} /* end _MD_OpenSharedMemory() */
341
342extern void* _MD_AttachSharedMemory(PRSharedMemory* shm, PRIntn flags) {
343 void* addr;
344 PRIntn prot = (PROT_READ0x1 | PROT_WRITE0x2);
345
346 PR_ASSERT(shm->ident == _PR_SHM_IDENT)((shm->ident == 0xdeadbad)?((void)0):PR_Assert("shm->ident == _PR_SHM_IDENT"
,"/root/firefox-clang/nsprpub/pr/src/md/unix/uxshm.c",346));
347
348 if (PR_SHM_READONLY0x01 == flags) {
349 prot ^= PROT_WRITE0x2;
350 }
351
352 addr = mmap((void*)0, shm->size, prot, MAP_SHARED0x01, shm->id, 0);
353 if ((void*)-1 == addr) {
354 _PR_MD_MAP_DEFAULT_ERROR_MD_unix_map_default_error(errno(*__errno_location ()));
355 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_AttachSharedMemory(): mmap failed: %s, errno: %d", shm
->ipcname, PR_GetOSError()); } } while (0)
356 ("_MD_AttachSharedMemory(): mmap failed: %s, errno: %d",do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_AttachSharedMemory(): mmap failed: %s, errno: %d", shm
->ipcname, PR_GetOSError()); } } while (0)
357 shm->ipcname, PR_GetOSError()))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_AttachSharedMemory(): mmap failed: %s, errno: %d", shm
->ipcname, PR_GetOSError()); } } while (0);
358 addr = NULL((void*)0);
359 } else {
360 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_AttachSharedMemory(): name: %s, attached at: %p", shm->
ipcname, addr); } } while (0)
361 ("_MD_AttachSharedMemory(): name: %s, attached at: %p", shm->ipcname,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_AttachSharedMemory(): name: %s, attached at: %p", shm->
ipcname, addr); } } while (0)
362 addr))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_AttachSharedMemory(): name: %s, attached at: %p", shm->
ipcname, addr); } } while (0);
363 }
364
365 return addr;
366}
367
368extern PRStatus _MD_DetachSharedMemory(PRSharedMemory* shm, void* addr) {
369 PRStatus rc = PR_SUCCESS;
370 PRIntn urc;
371
372 PR_ASSERT(shm->ident == _PR_SHM_IDENT)((shm->ident == 0xdeadbad)?((void)0):PR_Assert("shm->ident == _PR_SHM_IDENT"
,"/root/firefox-clang/nsprpub/pr/src/md/unix/uxshm.c",372));
373
374 urc = munmap(addr, shm->size);
375 if (-1 == urc) {
376 rc = PR_FAILURE;
377 _PR_MD_MAP_DEFAULT_ERROR_MD_unix_map_default_error(errno(*__errno_location ()));
378 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DetachSharedMemory(): munmap failed: %s, errno: %d", shm
->ipcname, PR_GetOSError()); } } while (0)
379 ("_MD_DetachSharedMemory(): munmap failed: %s, errno: %d",do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DetachSharedMemory(): munmap failed: %s, errno: %d", shm
->ipcname, PR_GetOSError()); } } while (0)
380 shm->ipcname, PR_GetOSError()))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DetachSharedMemory(): munmap failed: %s, errno: %d", shm
->ipcname, PR_GetOSError()); } } while (0);
381 }
382 return rc;
383}
384
385extern PRStatus _MD_CloseSharedMemory(PRSharedMemory* shm) {
386 int urc;
387
388 PR_ASSERT(shm->ident == _PR_SHM_IDENT)((shm->ident == 0xdeadbad)?((void)0):PR_Assert("shm->ident == _PR_SHM_IDENT"
,"/root/firefox-clang/nsprpub/pr/src/md/unix/uxshm.c",388));
389
390 urc = close(shm->id);
391 if (-1 == urc) {
392 _PR_MD_MAP_CLOSE_ERROR_MD_unix_map_close_error(errno(*__errno_location ()));
393 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_CloseSharedMemory(): close() failed, error: %d", PR_GetOSError
()); } } while (0)
394 ("_MD_CloseSharedMemory(): close() failed, error: %d",do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_CloseSharedMemory(): close() failed, error: %d", PR_GetOSError
()); } } while (0)
395 PR_GetOSError()))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_CloseSharedMemory(): close() failed, error: %d", PR_GetOSError
()); } } while (0);
396 return (PR_FAILURE);
397 }
398 PR_DELETE(shm->ipcname){ PR_Free(shm->ipcname); (shm->ipcname) = ((void*)0); };
399 PR_DELETE(shm){ PR_Free(shm); (shm) = ((void*)0); };
400 return PR_SUCCESS;
401}
402
403extern PRStatus _MD_DeleteSharedMemory(const char* name) {
404 PRStatus rc = PR_SUCCESS;
405 PRUintn urc;
406 char ipcname[PR_IPC_NAME_SIZE1024];
407
408 rc = _PR_MakeNativeIPCName(name, ipcname, PR_IPC_NAME_SIZE1024, _PRIPCShm);
409 if (PR_FAILURE == rc) {
410 PR_SetError(PR_UNKNOWN_ERROR(-5994L), errno(*__errno_location ()));
411 PR_LOG(do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): _PR_MakeNativeIPCName() failed: %s"
, name); } } while (0)
412 _pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): _PR_MakeNativeIPCName() failed: %s"
, name); } } while (0)
413 ("_MD_OpenSharedMemory(): _PR_MakeNativeIPCName() failed: %s", name))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_OpenSharedMemory(): _PR_MakeNativeIPCName() failed: %s"
, name); } } while (0);
414 return rc;
415 }
416
417 urc = shm_unlink(ipcname);
418 if (-1 == urc) {
419 rc = PR_FAILURE;
420 _PR_MD_MAP_DEFAULT_ERROR_MD_unix_map_default_error(errno(*__errno_location ()));
421 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DeleteSharedMemory(): shm_unlink failed: %s, errno: %d"
, ipcname, PR_GetOSError()); } } while (0)
422 ("_MD_DeleteSharedMemory(): shm_unlink failed: %s, errno: %d",do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DeleteSharedMemory(): shm_unlink failed: %s, errno: %d"
, ipcname, PR_GetOSError()); } } while (0)
423 ipcname, PR_GetOSError()))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DeleteSharedMemory(): shm_unlink failed: %s, errno: %d"
, ipcname, PR_GetOSError()); } } while (0);
424 } else {
425 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DeleteSharedMemory(): %s, success", ipcname); } } while
(0)
426 ("_MD_DeleteSharedMemory(): %s, success", ipcname))do { if (((_pr_shm_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_MD_DeleteSharedMemory(): %s, success", ipcname); } } while
(0);
427 }
428
429 return rc;
430} /* end _MD_DeleteSharedMemory() */
431#endif
432
433/*
434** Unix implementation for anonymous memory (file) mapping
435*/
436extern PRLogModuleInfo* _pr_shma_lm;
437
438#include <unistd.h>
439
440extern PRFileMap* _md_OpenAnonFileMap(const char* dirName, PRSize size,
441 PRFileMapProtect prot) {
442 PRFileMap* fm = NULL((void*)0);
443 PRFileDesc* fd;
444 int osfd;
445 PRIntn urc;
446 PRIntn mode = 0600;
447 char* genName;
448 pid_t pid = getpid(); /* for generating filename */
449 PRThread* tid = PR_GetCurrentThread(); /* for generating filename */
450 int incr; /* for generating filename */
451 const int maxTries = 20; /* maximum # attempts at a unique filename */
452 PRInt64 size64; /* 64-bit version of 'size' */
453
454 /*
455 ** generate a filename from input and runtime environment
456 ** open the file, unlink the file.
457 ** make maxTries number of attempts at uniqueness in the filename
458 */
459 for (incr = 0; incr < maxTries; incr++) {
460#define NSPR_AFM_FILENAME"%s/.NSPR-AFM-%d-%p.%d" "%s/.NSPR-AFM-%d-%p.%d"
461 genName = PR_smprintf(NSPR_AFM_FILENAME"%s/.NSPR-AFM-%d-%p.%d", dirName, (int)pid, tid, incr);
462 if (NULL((void*)0) == genName) {
463 PR_LOG(_pr_shma_lm, PR_LOG_DEBUG,do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_OpenAnonFileMap(): PR_snprintf(): failed, generating "
"filename"); } } while (0)
464 ("_md_OpenAnonFileMap(): PR_snprintf(): failed, generating "do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_OpenAnonFileMap(): PR_snprintf(): failed, generating "
"filename"); } } while (0)
465 "filename"))do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_OpenAnonFileMap(): PR_snprintf(): failed, generating "
"filename"); } } while (0);
466 goto Finished;
467 }
468
469 /* create the file */
470 osfd = open(genName, (O_CREAT0100 | O_EXCL0200 | O_RDWR02), mode);
471 if (-1 == osfd) {
472 if (EEXIST17 == errno(*__errno_location ())) {
473 PR_smprintf_free(genName);
474 continue; /* name exists, try again */
475 }
476 _PR_MD_MAP_OPEN_ERROR_MD_unix_map_open_error(errno(*__errno_location ()));
477 PR_LOG(_pr_shma_lm, PR_LOG_DEBUG,do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_OpenAnonFileMap(): open(): failed, filename: %s, errno: %d"
, genName, PR_GetOSError()); } } while (0)
478 ("_md_OpenAnonFileMap(): open(): failed, filename: %s, errno: %d",do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_OpenAnonFileMap(): open(): failed, filename: %s, errno: %d"
, genName, PR_GetOSError()); } } while (0)
479 genName, PR_GetOSError()))do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_OpenAnonFileMap(): open(): failed, filename: %s, errno: %d"
, genName, PR_GetOSError()); } } while (0);
480 PR_smprintf_free(genName);
481 goto Finished;
482 }
483 break; /* name generation and open successful, break; */
484 } /* end for() */
485
486 if (incr == maxTries) {
487 PR_ASSERT(-1 == osfd)((-1 == osfd)?((void)0):PR_Assert("-1 == osfd","/root/firefox-clang/nsprpub/pr/src/md/unix/uxshm.c"
,487));
488 PR_ASSERT(EEXIST == errno)((17 == (*__errno_location ()))?((void)0):PR_Assert("EEXIST == errno"
,"/root/firefox-clang/nsprpub/pr/src/md/unix/uxshm.c",488));
489 _PR_MD_MAP_OPEN_ERROR_MD_unix_map_open_error(errno(*__errno_location ()));
490 goto Finished;
491 }
492
493 urc = unlink(genName);
494 if (-1 == urc) {
495 _PR_MD_MAP_UNLINK_ERROR_MD_unix_map_unlink_error(errno(*__errno_location ()));
496 PR_LOG(_pr_shma_lm, PR_LOG_DEBUG,do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_OpenAnonFileMap(): failed on unlink(), errno: %d", (*__errno_location
())); } } while (0)
497 ("_md_OpenAnonFileMap(): failed on unlink(), errno: %d", errno))do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_OpenAnonFileMap(): failed on unlink(), errno: %d", (*__errno_location
())); } } while (0);
498 PR_smprintf_free(genName);
499 close(osfd);
500 goto Finished;
501 }
502 PR_LOG(_pr_shma_lm, PR_LOG_DEBUG,do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_OpenAnonFileMap(): unlink(): %s", genName); } } while (
0)
503 ("_md_OpenAnonFileMap(): unlink(): %s", genName))do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_OpenAnonFileMap(): unlink(): %s", genName); } } while (
0);
504
505 PR_smprintf_free(genName);
506
507 fd = PR_ImportFile(osfd);
508 if (NULL((void*)0) == fd) {
509 PR_LOG(_pr_shma_lm, PR_LOG_DEBUG,do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_OpenAnonFileMap(): PR_ImportFile(): failed"); } } while
(0)
510 ("_md_OpenAnonFileMap(): PR_ImportFile(): failed"))do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_OpenAnonFileMap(): PR_ImportFile(): failed"); } } while
(0);
511 goto Finished;
512 }
513 PR_LOG(_pr_shma_lm, PR_LOG_DEBUG, ("_md_OpenAnonFileMap(): fd: %p", fd))do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_OpenAnonFileMap(): fd: %p", fd); } } while (0);
514
515 urc = ftruncate(fd->secret->md.osfd, size);
516 if (-1 == urc) {
517 _PR_MD_MAP_DEFAULT_ERROR_MD_unix_map_default_error(errno(*__errno_location ()));
518 PR_LOG(_pr_shma_lm, PR_LOG_DEBUG,do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_OpenAnonFileMap(): failed on ftruncate(), errno: %d", (
*__errno_location ())); } } while (0)
519 ("_md_OpenAnonFileMap(): failed on ftruncate(), errno: %d", errno))do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_OpenAnonFileMap(): failed on ftruncate(), errno: %d", (
*__errno_location ())); } } while (0);
520 PR_Close(fd);
521 goto Finished;
522 }
523 PR_LOG(_pr_shma_lm, PR_LOG_DEBUG,do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_OpenAnonFileMap(): ftruncate(): size: %d", size); } } while
(0)
524 ("_md_OpenAnonFileMap(): ftruncate(): size: %d", size))do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_OpenAnonFileMap(): ftruncate(): size: %d", size); } } while
(0);
525
526 LL_UI2L(size64, size)((size64) = (PRInt64)(size)); /* PRSize (size_t) is unsigned */
527 fm = PR_CreateFileMap(fd, size64, prot);
528 if (NULL((void*)0) == fm) {
529 PR_LOG(_pr_shma_lm, PR_LOG_DEBUG, ("PR_OpenAnonFileMap(): failed"))do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("PR_OpenAnonFileMap(): failed"); } } while (0);
530 PR_Close(fd);
531 goto Finished;
532 }
533 fm->md.isAnonFM = PR_TRUE1; /* set fd close */
534
535 PR_LOG(_pr_shma_lm, PR_LOG_DEBUG,do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_OpenAnonFileMap(): PR_CreateFileMap(): fm: %p", fm); }
} while (0)
536 ("_md_OpenAnonFileMap(): PR_CreateFileMap(): fm: %p", fm))do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_OpenAnonFileMap(): PR_CreateFileMap(): fm: %p", fm); }
} while (0);
537
538Finished:
539 return (fm);
540} /* end md_OpenAnonFileMap() */
541
542/*
543** _md_ExportFileMapAsString()
544**
545**
546*/
547extern PRStatus _md_ExportFileMapAsString(PRFileMap* fm, PRSize bufSize,
548 char* buf) {
549 PRIntn written;
550 PRIntn prot = (PRIntn)fm->prot;
551
552 written = PR_snprintf(buf, bufSize, "%ld:%d", fm->fd->secret->md.osfd, prot);
553
554 return ((written == -1) ? PR_FAILURE : PR_SUCCESS);
555} /* end _md_ExportFileMapAsString() */
556
557extern PRFileMap* _md_ImportFileMapFromString(const char* fmstring) {
558 PRStatus rc;
559 PRInt32 osfd;
560 PRIntn prot; /* really: a PRFileMapProtect */
561 PRFileDesc* fd;
562 PRFileMap* fm = NULL((void*)0); /* default return value */
563 PRFileInfo64 info;
564
565 PR_sscanf(fmstring, "%ld:%d", &osfd, &prot);
566
567 /* import the os file descriptor */
568 fd = PR_ImportFile(osfd);
569 if (NULL((void*)0) == fd) {
570 PR_LOG(_pr_shma_lm, PR_LOG_DEBUG,do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_ImportFileMapFromString(): PR_ImportFile() failed"); }
} while (0)
571 ("_md_ImportFileMapFromString(): PR_ImportFile() failed"))do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_ImportFileMapFromString(): PR_ImportFile() failed"); }
} while (0);
572 goto Finished;
573 }
574
575 rc = PR_GetOpenFileInfo64(fd, &info);
576 if (PR_FAILURE == rc) {
577 PR_LOG(_pr_shma_lm, PR_LOG_DEBUG,do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_ImportFileMapFromString(): PR_GetOpenFileInfo64() failed"
); } } while (0)
578 ("_md_ImportFileMapFromString(): PR_GetOpenFileInfo64() failed"))do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_ImportFileMapFromString(): PR_GetOpenFileInfo64() failed"
); } } while (0);
579 goto Finished;
580 }
581
582 fm = PR_CreateFileMap(fd, info.size, (PRFileMapProtect)prot);
583 if (NULL((void*)0) == fm) {
584 PR_LOG(_pr_shma_lm, PR_LOG_DEBUG,do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_ImportFileMapFromString(): PR_CreateFileMap() failed")
; } } while (0)
585 ("_md_ImportFileMapFromString(): PR_CreateFileMap() failed"))do { if (((_pr_shma_lm)->level >= (PR_LOG_DEBUG))) { PR_LogPrint
("_md_ImportFileMapFromString(): PR_CreateFileMap() failed")
; } } while (0);
586 }
587
588Finished:
589 return (fm);
590} /* end _md_ImportFileMapFromString() */