Add a test that simulates an error in mmap().

FossilOrigin-Name: 6ec7367d8e98425f00eeb8215ca8964313c1d0b7

manifest

@@ -1,5 +1,5 @@
-C Simulate\sOOM\serrors\sin\sthe\ssqlite3OsFetch()\sfunction.\sRun\smalloc.test\sas\spart\sof\sthe\s"mmap"\spermutation.
-D 2013-03-25T18:25:49.003
+C Add\sa\stest\sthat\ssimulates\san\serror\sin\smmap().
+D 2013-03-25T19:05:07.846
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in 9a804abbd3cae82d196e4d33aba13239e32522a5
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -160,7 +160,7 @@ F src/notify.c 976dd0f6171d4588e89e874fcc765e92914b6d30
 F src/os.c 809d0707cec693e1b9b376ab229271ad74c3d35d
 F src/os.h ae08bcc5f6ec6b339f4a2adf3931bb88cc14c3e4
 F src/os_common.h 92815ed65f805560b66166e3583470ff94478f04
-F src/os_unix.c 664fc178a9478246f6c84e46292e77fb5bee4431
+F src/os_unix.c 6815e3dd9a1507f2e36ba5a8dcd36b67ac60f3b0
 F src/os_win.c 386f8c034b177b672f7819ddc5d80be6c8d593ac
 F src/pager.c d0cdf47664e487f735b4bea485ee70637ed34a55
 F src/pager.h 241d72dc0905df042da165f086d03505cb0bb50c
@@ -226,7 +226,7 @@ F src/test_spellfix.c 56dfa6d583ac34f61af0834d7b58d674e7e18e13
 F src/test_sqllog.c 8acb843ddb9928dea8962e31bb09f421a72ffccb
 F src/test_stat.c d1569c7a4839f13e80187e2c26b2ab4da2d03935
 F src/test_superlock.c 2b97936ca127d13962c3605dbc9a4ef269c424cd
-F src/test_syscall.c a992d8c80ea91fbf21fb2dd570db40e77dd7e6ae
+F src/test_syscall.c fe018f95049d4f24e036d1d649516b60689b4e57
 F src/test_tclvar.c f4dc67d5f780707210d6bb0eb6016a431c04c7fa
 F src/test_thread.c e286f2173563f2a1747c24bcda6b9d030bf4f4e4
 F src/test_vfs.c fb16b2d9938cf0c1afc5a423b55b952fcc024275
@@ -611,7 +611,7 @@ F test/mallocH.test 79b65aed612c9b3ed2dcdaa727c85895fd1bfbdb
 F test/mallocI.test a88c2b9627c8506bf4703d8397420043a786cdb6
 F test/mallocJ.test b5d1839da331d96223e5f458856f8ffe1366f62e
 F test/mallocK.test d79968641d1b70d88f6c01bdb9a7eb4a55582cc9
-F test/malloc_common.tcl 2930895b0962823ec679853e67e58dd6d8198b3c
+F test/malloc_common.tcl 9a98856549bfb3fab205edbc1317216edc52e70d
 F test/manydb.test 28385ae2087967aa05c38624cec7d96ec74feb3e
 F test/mem5.test c6460fba403c5703141348cd90de1c294188c68f
 F test/memdb.test 708a028d6d373e5b3842e4bdc8ba80998c9a4da6
@@ -747,7 +747,7 @@ F test/substr.test 18f57c4ca8a598805c4d64e304c418734d843c1a
 F test/superlock.test 1cde669f68d2dd37d6c9bd35eee1d95491ae3fc2
 F test/sync.test a34cd43e98b7fb84eabbf38f7ed8f7349b3f3d85
 F test/syscall.test bea9bf329bff733c791310244617c2a76974e64a
-F test/sysfault.test c79441d88d23696fbec7b147dba98d42a04f523f
+F test/sysfault.test 3258d6c8213b44f2669994d798a5eb5327b40146
 F test/table.test a59d985ca366e39b17b175f387f9d5db5a18d4e2
 F test/tableapi.test 2674633fa95d80da917571ebdd759a14d9819126
 F test/tclsqlite.test 37a61c2da7e3bfe3b8c1a2867199f6b860df5d43
@@ -1039,7 +1039,7 @@ F tool/vdbe-compress.tcl f12c884766bd14277f4fcedcae07078011717381
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381
 F tool/win/sqlite.vsix 97894c2790eda7b5bce3cc79cb2a8ec2fde9b3ac
-P 115b830509e8f0aa9d5965c1e9cd4f2ed9d01938
-R 81bdcfaea4ca0021abe5572b7c1cd51d
+P 77443ef2cd0b29b7822eea544ab8c6c4a93cb67b
+R 602dbedb509e1b6f815316de036c2541
 U dan
-Z 1c0203030ba88df7bcf075001cefd19c
+Z 3ee6172e1f5d6ed5486bb4fa69d324f2

manifest.uuid

@@ -1 +1 @@
-77443ef2cd0b29b7822eea544ab8c6c4a93cb67b
+6ec7367d8e98425f00eeb8215ca8964313c1d0b7

src/os_unix.c

@@ -444,6 +444,9 @@ static struct unix_syscall {
   { "fchown",       (sqlite3_syscall_ptr)posixFchown,     0 },
 #define osFchown    ((int(*)(int,uid_t,gid_t))aSyscall[20].pCurrent)
 
+  { "mmap",       (sqlite3_syscall_ptr)mmap,     0 },
+#define osMmap ((void*(*)(void*,size_t,int,int,int,off_t))aSyscall[21].pCurrent)
+
 }; /* End of the overrideable system calls */
 
 /*
@@ -4547,7 +4550,7 @@ static int unixMapfile(unixFile *pFd, i64 nByte){
       void *pNew;
       int flags = PROT_READ;
       if( (pFd->ctrlFlags & UNIXFILE_RDONLY)==0 ) flags |= PROT_WRITE;
-      pNew = mmap(0, nMap, flags, MAP_SHARED, pFd->h, 0);
+      pNew = osMmap(0, nMap, flags, MAP_SHARED, pFd->h, 0);
       if( pNew==MAP_FAILED ){
         return SQLITE_IOERR_MMAP;
       }
@@ -7186,7 +7189,7 @@ int sqlite3_os_init(void){
 
   /* Double-check that the aSyscall[] array has been constructed
   ** correctly.  See ticket [bb3a86e890c8e96ab] */
-  assert( ArraySize(aSyscall)==21 );
+  assert( ArraySize(aSyscall)==22 );
 
   /* Register all VFSes defined in the aVfs[] array */
   for(i=0; i<(sizeof(aVfs)/sizeof(sqlite3_vfs)); i++){

src/test_syscall.c

@@ -23,7 +23,7 @@
 **
 **         open        close      access   getcwd   stat      fstat    
 **         ftruncate   fcntl      read     pread    pread64   write
-**         pwrite      pwrite64   fchmod   fallocate
+**         pwrite      pwrite64   fchmod   fallocate mmap
 **
 **   test_syscall uninstall
 **     Uninstall all wrapper functions.
@@ -81,6 +81,7 @@
 /* From test1.c */
 extern const char *sqlite3TestErrorName(int);
 
+#include <sys/mman.h>
 #include <sys/types.h>
 #include <errno.h>
 
@@ -106,6 +107,7 @@ static int ts_pwrite(int fd, const void *aBuf, size_t nBuf, off_t off);
 static int ts_pwrite64(int fd, const void *aBuf, size_t nBuf, off_t off);
 static int ts_fchmod(int fd, mode_t mode);
 static int ts_fallocate(int fd, off_t off, off_t len);
+static void *ts_mmap(void *, size_t, int, int, int, off_t);
 
 
 struct TestSyscallArray {
@@ -131,6 +133,7 @@ struct TestSyscallArray {
   /* 13 */ { "pwrite64",  (sqlite3_syscall_ptr)ts_pwrite64,  0, 0, 0 },
   /* 14 */ { "fchmod",    (sqlite3_syscall_ptr)ts_fchmod,    0, 0, 0 },
   /* 15 */ { "fallocate", (sqlite3_syscall_ptr)ts_fallocate, 0, 0, 0 },
+  /* 16 */ { "mmap",      (sqlite3_syscall_ptr)ts_mmap,      0, 0, 0 },
            { 0, 0, 0, 0, 0 }
 };
 
@@ -152,6 +155,7 @@ struct TestSyscallArray {
                        aSyscall[13].xOrig)
 #define orig_fchmod    ((int(*)(int,mode_t))aSyscall[14].xOrig)
 #define orig_fallocate ((int(*)(int,off_t,off_t))aSyscall[15].xOrig)
+#define orig_mmap      ((void*(*)(void*,size_t,int,int,int,off_t))aSyscall[16].xOrig)
 
 /*
 ** This function is called exactly once from within each invocation of a
@@ -377,6 +381,20 @@ static int ts_fallocate(int fd, off_t off, off_t len){
   return orig_fallocate(fd, off, len);
 }
 
+static void *ts_mmap(
+  void *pAddr, 
+  size_t nByte, 
+  int prot, 
+  int flags, 
+  int fd, 
+  off_t iOff
+){
+  if( tsIsFailErrno("mmap") ){
+    return MAP_FAILED;
+  }
+  return orig_mmap(pAddr, nByte, prot, flags, fd, iOff);
+}
+
 static int test_syscall_install(
   void * clientData,
   Tcl_Interp *interp,

test/malloc_common.tcl

@@ -264,7 +264,7 @@ proc faultsim_test_result_int {args} {
   set t [list $testrc $testresult]
   set r $args
   if { ($testnfail==0 && $t != [lindex $r 0]) || [lsearch $r $t]<0 } {
-    error "nfail=$testnfail rc=$testrc result=$testresult"
+    error "nfail=$testnfail rc=$testrc result=$testresult list=$r"
   }
 }
 

test/sysfault.test

@@ -243,5 +243,36 @@ do_faultsim_test 3 -faults vfsfault-* -prep {
   faultsim_test_result {0 20000}
 }
 
+#-------------------------------------------------------------------------
+# Test errors in mmap().
+#
+proc vfsfault_install {} { 
+  test_syscall reset
+  test_syscall install {mmap}
+}
+
+faultsim_delete_and_reopen
+execsql {
+  CREATE TABLE t1(a, b);
+  INSERT INTO t1 VALUES(1, 2);
+}
+faultsim_save_and_close
+
+do_faultsim_test 4 -faults vfsfault-* -prep {
+  faultsim_restore_and_reopen
+  file_control_chunksize_test db main 8192
+  execsql { 
+    PRAGMA mmap_size = 1000000;
+  }
+} -body {
+  test_syscall errno mmap     EACCES
+
+  execsql {
+    SELECT * FROM t1;
+  }
+} -test {
+  faultsim_test_result {0 {1 2}} {1 {disk I/O error}}
+}
+
 finish_test