static void test_insertfile(abts_case *tc, void *ctx)
{
apr_bucket_alloc_t *ba = apr_bucket_alloc_create(p);
apr_bucket_brigade *bb;
const apr_off_t bignum = (APR_INT64_C(2) << 32) + 424242;
apr_off_t count;
apr_file_t *f;
apr_bucket *e;
ABTS_ASSERT(tc, "open test file",
apr_file_open(&f, TIF_FNAME,
APR_FOPEN_WRITE | APR_FOPEN_TRUNCATE
| APR_FOPEN_CREATE | APR_FOPEN_SPARSE,
APR_OS_DEFAULT, p) == APR_SUCCESS);
if (apr_file_trunc(f, bignum)) {
apr_file_close(f);
apr_file_remove(TIF_FNAME, p);
ABTS_NOT_IMPL(tc, "Skipped: could not create large file");
return;
}
bb = apr_brigade_create(p, ba);
e = apr_brigade_insert_file(bb, f, 0, bignum, p);
ABTS_ASSERT(tc, "inserted file was not at end of brigade",
e == APR_BRIGADE_LAST(bb));
/* check that the total size of inserted buckets is equal to the
* total size of the file. */
count = 0;
for (e = APR_BRIGADE_FIRST(bb);
e != APR_BRIGADE_SENTINEL(bb);
e = APR_BUCKET_NEXT(e)) {
ABTS_ASSERT(tc, "bucket size sane", e->length != (apr_size_t)-1);
count += e->length;
}
ABTS_ASSERT(tc, "total size of buckets incorrect", count == bignum);
apr_brigade_destroy(bb);
/* Truncate the file to zero size before close() so that we don't
* actually write out the large file if we are on a non-sparse file
* system - like Mac OS X's HFS. Otherwise, pity the poor user who
* has to wait for the 8GB file to be written to disk.
*/
apr_file_trunc(f, 0);
apr_file_close(f);
apr_bucket_alloc_destroy(ba);
apr_file_remove(TIF_FNAME, p);
}
static void test_file_trunc(abts_case *tc, void *data)
{
apr_status_t rv;
apr_file_t *f;
const char *fname = "data/testtruncate.dat";
const char *s;
apr_size_t nbytes;
apr_finfo_t finfo;
apr_file_remove(fname, p);
/* Test unbuffered */
rv = apr_file_open(&f, fname,
APR_FOPEN_CREATE | APR_FOPEN_READ |
APR_FOPEN_WRITE,
APR_FPROT_UREAD | APR_FPROT_UWRITE, p);
ABTS_INT_EQUAL(tc, APR_SUCCESS, rv);
s = "some data";
nbytes = strlen(s);
rv = apr_file_write(f, s, &nbytes);
ABTS_INT_EQUAL(tc, APR_SUCCESS, rv);
ABTS_SIZE_EQUAL(tc, strlen(s), nbytes);
rv = apr_file_trunc(f, 4);
ABTS_INT_EQUAL(tc, APR_SUCCESS, rv);
rv = apr_file_close(f);
ABTS_INT_EQUAL(tc, APR_SUCCESS, rv);
rv = apr_stat(&finfo, fname, APR_FINFO_SIZE, p);
ABTS_INT_EQUAL(tc, APR_SUCCESS, rv);
ABTS_ASSERT(tc, "File size mismatch, expected 4", finfo.size == 4);
rv = apr_file_remove(fname, p);
ABTS_INT_EQUAL(tc, APR_SUCCESS, rv);
/* Test buffered */
rv = apr_file_open(&f, fname,
APR_FOPEN_CREATE | APR_FOPEN_READ |
APR_FOPEN_WRITE | APR_FOPEN_BUFFERED,
APR_FPROT_UREAD | APR_FPROT_UWRITE, p);
ABTS_INT_EQUAL(tc, APR_SUCCESS, rv);
nbytes = strlen(s);
rv = apr_file_write(f, s, &nbytes);
ABTS_INT_EQUAL(tc, APR_SUCCESS, rv);
ABTS_SIZE_EQUAL(tc, strlen(s), nbytes);
rv = apr_file_trunc(f, 4);
ABTS_INT_EQUAL(tc, APR_SUCCESS, rv);
rv = apr_file_close(f);
ABTS_INT_EQUAL(tc, APR_SUCCESS, rv);
rv = apr_stat(&finfo, fname, APR_FINFO_SIZE, p);
ABTS_INT_EQUAL(tc, APR_SUCCESS, rv);
ABTS_ASSERT(tc, "File size mismatch, expected 4", finfo.size == 4);
rv = apr_file_remove(fname, p);
ABTS_INT_EQUAL(tc, APR_SUCCESS, rv);
}
/* Regression test for PR 34708, where a file bucket will keep
* duplicating itself on being read() when EOF is reached
* prematurely. */
static void test_truncfile(abts_case *tc, void *data)
{
apr_bucket_alloc_t *ba = apr_bucket_alloc_create(p);
apr_bucket_brigade *bb = apr_brigade_create(p, ba);
apr_file_t *f = make_test_file(tc, "testfile.txt", "hello");
apr_bucket *e;
const char *buf;
apr_size_t len;
apr_brigade_insert_file(bb, f, 0, 5, p);
apr_file_trunc(f, 0);
e = APR_BRIGADE_FIRST(bb);
ABTS_ASSERT(tc, "single bucket in brigade",
APR_BUCKET_NEXT(e) == APR_BRIGADE_SENTINEL(bb));
apr_bucket_file_enable_mmap(e, 0);
ABTS_ASSERT(tc, "read gave APR_EOF",
apr_bucket_read(e, &buf, &len, APR_BLOCK_READ) == APR_EOF);
ABTS_ASSERT(tc, "read length 0", len == 0);
ABTS_ASSERT(tc, "still a single bucket in brigade",
APR_BUCKET_NEXT(e) == APR_BRIGADE_SENTINEL(bb));
apr_file_close(f);
apr_brigade_destroy(bb);
apr_bucket_alloc_destroy(ba);
}
/* syncs a filehandle (Transfer all file modified data and metadata to disk.) */
void MVM_file_truncate(MVMThreadContext *tc, MVMObject *oshandle, MVMint64 offset) {
apr_status_t rv;
MVMOSHandle *handle;
verify_filehandle_type(tc, oshandle, &handle, "truncate filehandle");
if ((rv = apr_file_trunc(handle->body.file_handle, (apr_off_t)offset)) != APR_SUCCESS) {
MVM_exception_throw_apr_error(tc, rv, "Failed to truncate filehandle: ");
}
}
static int file_truncate(lua_State *L)
{
apr_status_t status;
lua_apr_file *file;
apr_off_t offset;
file = file_check(L, 1, 1);
offset = luaL_optlong(L, 2, 0);
status = apr_file_trunc(file->handle, offset);
return push_status(L, status);
}
int lc_truncateLogFile(void) {
apr_status_t status=0;
int cur_pid=getpid();
if(refreshLogger.status!=APR_SUCCESS||cur_pid!=refreshLogger.pid) {
//printf("\nLogfile has not been opened.\n");
return FALSE;
}
status=apr_file_trunc(refreshLogger.logger.file,0);
//if(status!=APR_SUCCESS)
//printf("\nFailed to truncate logfile - %s\n", refreshLogger.filepath);
return status;
}
/* After a error, truncate the current file and write out an error
* message, which must be contained in status->errbuf. The process is
* terminated on failure. */
static void truncate_and_write_error(rotate_status_t *status)
{
apr_size_t buflen = strlen(status->errbuf);
if (apr_file_trunc(status->current.fd, 0) != APR_SUCCESS) {
fprintf(stderr, "Error truncating the file %s\n", status->current.name);
exit(2);
}
if (apr_file_write_full(status->current.fd, status->errbuf, buflen, NULL) != APR_SUCCESS) {
fprintf(stderr, "Error writing error (%s) to the file %s\n",
status->errbuf, status->current.name);
exit(2);
}
}
int logcore_truncateLogFile(){
apr_status_t status=0;
int cur_pid;
cur_pid=getpid();
if(rLogFile.status!=APR_SUCCESS||cur_pid!=rLogFile.pid){
//printf("\nLogfile has not been opened.\n");
return FALSE;
}
status=apr_file_trunc(rLogFile.logfile_hndl,0);
//if(status!=APR_SUCCESS)
//printf("\nFailed to truncate logfile - %s\n", rLogFile.logfile_name);
return status;
}
apr_status_t truncate_file(char* fn, apr_pool_t* pool)
{
apr_file_t *fp = NULL;
apr_status_t status;
status = apr_file_open(&fp, fn, APR_WRITE|APR_CREATE|APR_TRUNCATE, APR_UREAD|APR_UWRITE, pool);
if (status == APR_SUCCESS)
{
status = apr_file_trunc(fp, 0);
apr_file_close(fp);
}
if (status != APR_SUCCESS)
{
gpmon_warningx(FLINE, 0, "harvest process truncate file %s failed", fn);
}
else
{
TR1(("harvest truncated file %s: ok\n", fn));
}
return status;
}
APR_DECLARE(apr_status_t) apr_shm_create(apr_shm_t **m,
apr_size_t reqsize,
const char *file,
apr_pool_t *pool)
{
static apr_size_t memblock = 0;
HANDLE hMap, hFile;
apr_status_t rv;
apr_size_t size;
apr_file_t *f;
void *base;
void *mapkey;
DWORD err, sizelo, sizehi;
reqsize += sizeof(memblock_t);
if (!memblock)
{
SYSTEM_INFO si;
GetSystemInfo(&si);
memblock = si.dwAllocationGranularity;
}
/* Compute the granualar multiple of the pagesize */
size = memblock * (1 + (reqsize - 1) / memblock);
sizelo = (DWORD)size;
#ifdef _WIN64
sizehi = (DWORD)(size >> 32);
#else
sizehi = 0;
#endif
if (!file) {
/* Do Anonymous, which must be passed as a duplicated handle */
#ifndef _WIN32_WCE
hFile = INVALID_HANDLE_VALUE;
#endif
mapkey = NULL;
}
else {
/* Do file backed, which is not an inherited handle
* While we could open APR_EXCL, it doesn't seem that Unix
* ever did. Ignore that error here, but fail later when
* we discover we aren't the creator of the file map object.
*/
rv = apr_file_open(&f, file,
APR_READ | APR_WRITE | APR_BINARY | APR_CREATE,
APR_UREAD | APR_UWRITE, pool);
if ((rv != APR_SUCCESS)
|| ((rv = apr_os_file_get(&hFile, f)) != APR_SUCCESS)) {
return rv;
}
rv = apr_file_trunc(f, size);
/* res_name_from_filename turns file into a pseudo-name
* without slashes or backslashes, and prepends the \global
* prefix on Win2K and later
*/
mapkey = res_name_from_filename(file, 1, pool);
}
#if APR_HAS_UNICODE_FS
IF_WIN_OS_IS_UNICODE
{
hMap = CreateFileMappingW(hFile, NULL, PAGE_READWRITE,
sizehi, sizelo, mapkey);
}
#endif
#if APR_HAS_ANSI_FS
ELSE_WIN_OS_IS_ANSI
{
hMap = CreateFileMappingA(hFile, NULL, PAGE_READWRITE,
sizehi, sizelo, mapkey);
}
#endif
err = apr_get_os_error();
if (file) {
apr_file_close(f);
}
if (hMap && APR_STATUS_IS_EEXIST(err)) {
CloseHandle(hMap);
return APR_EEXIST;
}
if (!hMap) {
return err;
}
base = MapViewOfFile(hMap, FILE_MAP_READ | FILE_MAP_WRITE,
0, 0, size);
if (!base) {
CloseHandle(hMap);
return apr_get_os_error();
}
*m = (apr_shm_t *) apr_palloc(pool, sizeof(apr_shm_t));
(*m)->pool = pool;
(*m)->hMap = hMap;
(*m)->memblk = base;
(*m)->size = size;
(*m)->usrmem = (char*)base + sizeof(memblock_t);
(*m)->length = reqsize - sizeof(memblock_t);;
(*m)->memblk->length = (*m)->length;
(*m)->memblk->size = (*m)->size;
(*m)->filename = file ? apr_pstrdup(pool, file) : NULL;
apr_pool_cleanup_register((*m)->pool, *m,
shm_cleanup, apr_pool_cleanup_null);
return APR_SUCCESS;
}
void nx_expr_proc__xm_fileop_file_truncate(nx_expr_eval_ctx_t *eval_ctx,
nx_module_t *module,
nx_expr_arg_list_t *args)
{
nx_expr_arg_t *arg;
nx_value_t file;
nx_expr_arg_t *offset;
nx_value_t offsetval;
nx_exception_t e;
apr_off_t offs = 0;
apr_status_t rv;
apr_pool_t *pool;
apr_file_t *fd;
ASSERT(module != NULL);
ASSERT(args != NULL);
arg = NX_DLIST_FIRST(args);
ASSERT(arg != NULL);
ASSERT(arg->expr != NULL);
nx_expr_evaluate(eval_ctx, &file, arg->expr);
if ( file.defined != TRUE )
{
throw_msg("'file' is undef");
}
if ( file.type != NX_VALUE_TYPE_STRING )
{
nx_value_kill(&file);
throw_msg("string type required for 'file'");
}
if ( (offset = NX_DLIST_NEXT(arg, link)) != NULL )
{
ASSERT(offset->expr != NULL);
try
{
nx_expr_evaluate(eval_ctx, &offsetval, offset->expr);
}
catch(e)
{
nx_value_kill(&file);
rethrow(e);
}
if ( offsetval.defined != TRUE )
{
nx_value_kill(&file);
throw_msg("'offset' is undef");
}
if ( offsetval.type != NX_VALUE_TYPE_INTEGER )
{
nx_value_kill(&offsetval);
nx_value_kill(&file);
throw_msg("integer type required for 'offset'");
}
offs = (apr_off_t) offsetval.integer;
}
pool = nx_pool_create_core();
if ( (rv = apr_file_open(&fd, file.string->buf, APR_WRITE | APR_CREATE, APR_OS_DEFAULT,
pool)) != APR_SUCCESS )
{
log_aprerror(rv, "failed to open file '%s' when trying to truncate",
file.string->buf);
}
if ( rv == APR_SUCCESS )
{
if ( (rv = apr_file_trunc(fd, offs)) != APR_SUCCESS )
{
log_aprerror(rv, "failed to truncate file '%s' to length %lu",
file.string->buf, (long unsigned int) offs);
}
apr_file_close(fd);
}
apr_pool_destroy(pool);
nx_value_kill(&file);
}
SWITCH_DECLARE(switch_status_t) switch_file_trunc(switch_file_t *thefile, int64_t offset)
{
return apr_file_trunc(thefile, offset);
}
/**
* This is not thread safe, must ensure that modules are not running,
* otherwise lock config_cache_mutex
*/
void nx_config_cache_write()
{
nx_ctx_t *ctx;
nx_cc_item_t *item;
nx_value_t *version = NULL;
nx_exception_t e;
apr_hash_index_t *idx;
const char *key;
apr_ssize_t keylen;
ctx = nx_ctx_get();
ASSERT(ctx != NULL);
if ( ctx->nocache == TRUE )
{
log_debug("NoCache is TRUE, not writing config cache");
return;
}
if ( apr_hash_count(ctx->config_cache) == 0 )
{ // no items to write
log_debug("no entries found, not writing configcache.dat");
return;
}
log_debug("nx_config_cache_write()");
if ( ctx->ccfile == NULL )
{
CHECKERR_MSG(apr_file_open(&(ctx->ccfile), ctx->ccfilename,
APR_READ | APR_WRITE | APR_CREATE | APR_TRUNCATE,
APR_OS_DEFAULT, ctx->pool),
"couldn't open config cache '%s' for writing", ctx->ccfilename);
}
else
{
CHECKERR_MSG(apr_file_trunc(ctx->ccfile, 0), "failed to truncate '%s'",
ctx->ccfilename);
}
version = nx_value_new_string(NX_CONFIG_CACHE_VERSION);
try
{
CHECKERR_MSG(nx_value_to_file(version, ctx->ccfile),
"couldn't write version to cache file");
idx = apr_hash_first(NULL, ctx->config_cache);
while ( idx != NULL )
{
apr_hash_this(idx, (const void **) &key, &keylen, (void **) &item);
idx = apr_hash_next(idx);
if ( item->used == FALSE )
{ // only write items which have been read or written
continue;
}
_write_item(ctx->ccfile, item);
item->needflush = FALSE;
}
}
catch(e)
{
nx_value_free(version);
rethrow(e);
}
log_debug("config cache written to %s", ctx->ccfilename);
}
APR_DECLARE(apr_status_t) apr_shm_create(apr_shm_t **m,
apr_size_t reqsize,
const char *filename,
apr_pool_t *pool)
{
apr_shm_t *new_m;
apr_status_t status;
#if APR_USE_SHMEM_SHMGET || APR_USE_SHMEM_SHMGET_ANON
struct shmid_ds shmbuf;
apr_uid_t uid;
apr_gid_t gid;
#endif
#if APR_USE_SHMEM_MMAP_TMP || APR_USE_SHMEM_MMAP_SHM || \
APR_USE_SHMEM_MMAP_ZERO
int tmpfd;
#endif
#if APR_USE_SHMEM_SHMGET
apr_size_t nbytes;
#endif
#if APR_USE_SHMEM_MMAP_ZERO || APR_USE_SHMEM_SHMGET || \
APR_USE_SHMEM_MMAP_TMP || APR_USE_SHMEM_MMAP_SHM
apr_file_t *file; /* file where metadata is stored */
#endif
/* Check if they want anonymous or name-based shared memory */
if (filename == NULL) {
#if APR_USE_SHMEM_MMAP_ZERO || APR_USE_SHMEM_MMAP_ANON
new_m = apr_palloc(pool, sizeof(apr_shm_t));
new_m->pool = pool;
new_m->reqsize = reqsize;
new_m->realsize = reqsize +
APR_ALIGN_DEFAULT(sizeof(apr_size_t)); /* room for metadata */
new_m->filename = NULL;
#if APR_USE_SHMEM_MMAP_ZERO
status = apr_file_open(&file, "/dev/zero", APR_READ | APR_WRITE,
APR_OS_DEFAULT, pool);
if (status != APR_SUCCESS) {
return status;
}
status = apr_os_file_get(&tmpfd, file);
if (status != APR_SUCCESS) {
return status;
}
new_m->base = mmap(NULL, new_m->realsize, PROT_READ|PROT_WRITE,
MAP_SHARED, tmpfd, 0);
if (new_m->base == (void *)MAP_FAILED) {
return errno;
}
status = apr_file_close(file);
if (status != APR_SUCCESS) {
return status;
}
/* store the real size in the metadata */
*(apr_size_t*)(new_m->base) = new_m->realsize;
/* metadata isn't usable */
new_m->usable = (char *)new_m->base + APR_ALIGN_DEFAULT(sizeof(apr_size_t));
apr_pool_cleanup_register(new_m->pool, new_m, shm_cleanup_owner,
apr_pool_cleanup_null);
*m = new_m;
return APR_SUCCESS;
#elif APR_USE_SHMEM_MMAP_ANON
new_m->base = mmap(NULL, new_m->realsize, PROT_READ|PROT_WRITE,
MAP_ANON|MAP_SHARED, -1, 0);
if (new_m->base == (void *)MAP_FAILED) {
return errno;
}
/* store the real size in the metadata */
*(apr_size_t*)(new_m->base) = new_m->realsize;
/* metadata isn't usable */
new_m->usable = (char *)new_m->base + APR_ALIGN_DEFAULT(sizeof(apr_size_t));
apr_pool_cleanup_register(new_m->pool, new_m, shm_cleanup_owner,
apr_pool_cleanup_null);
*m = new_m;
return APR_SUCCESS;
#endif /* APR_USE_SHMEM_MMAP_ZERO */
#elif APR_USE_SHMEM_SHMGET_ANON
new_m = apr_palloc(pool, sizeof(apr_shm_t));
new_m->pool = pool;
new_m->reqsize = reqsize;
new_m->realsize = reqsize;
new_m->filename = NULL;
new_m->shmkey = IPC_PRIVATE;
if ((new_m->shmid = shmget(new_m->shmkey, new_m->realsize,
SHM_R | SHM_W | IPC_CREAT)) < 0) {
return errno;
}
if ((new_m->base = shmat(new_m->shmid, NULL, 0)) == (void *)-1) {
return errno;
}
new_m->usable = new_m->base;
if (shmctl(new_m->shmid, IPC_STAT, &shmbuf) == -1) {
return errno;
}
apr_uid_current(&uid, &gid, pool);
shmbuf.shm_perm.uid = uid;
shmbuf.shm_perm.gid = gid;
if (shmctl(new_m->shmid, IPC_SET, &shmbuf) == -1) {
return errno;
}
/* Remove the segment once use count hits zero.
* We will not attach to this segment again, since it is
* anonymous memory, so it is ok to mark it for deletion.
*/
if (shmctl(new_m->shmid, IPC_RMID, NULL) == -1) {
return errno;
}
apr_pool_cleanup_register(new_m->pool, new_m, shm_cleanup_owner,
apr_pool_cleanup_null);
*m = new_m;
return APR_SUCCESS;
#else
/* It is an error if they want anonymous memory but we don't have it. */
return APR_ENOTIMPL; /* requested anonymous but we don't have it */
#endif
}
/* Name-based shared memory */
else {
new_m = apr_palloc(pool, sizeof(apr_shm_t));
new_m->pool = pool;
new_m->reqsize = reqsize;
new_m->filename = apr_pstrdup(pool, filename);
#if APR_USE_SHMEM_MMAP_SHM
const char *shm_name = make_shm_open_safe_name(filename, pool);
#endif
#if APR_USE_SHMEM_MMAP_TMP || APR_USE_SHMEM_MMAP_SHM
new_m->realsize = reqsize +
APR_ALIGN_DEFAULT(sizeof(apr_size_t)); /* room for metadata */
/* FIXME: Ignore error for now. *
* status = apr_file_remove(file, pool);*/
status = APR_SUCCESS;
#if APR_USE_SHMEM_MMAP_TMP
/* FIXME: Is APR_OS_DEFAULT sufficient? */
status = apr_file_open(&file, filename,
APR_READ | APR_WRITE | APR_CREATE | APR_EXCL,
APR_OS_DEFAULT, pool);
if (status != APR_SUCCESS) {
return status;
}
status = apr_os_file_get(&tmpfd, file);
if (status != APR_SUCCESS) {
apr_file_close(file); /* ignore errors, we're failing */
apr_file_remove(new_m->filename, new_m->pool);
return status;
}
status = apr_file_trunc(file, new_m->realsize);
if (status != APR_SUCCESS && status != APR_ESPIPE) {
apr_file_close(file); /* ignore errors, we're failing */
apr_file_remove(new_m->filename, new_m->pool);
return status;
}
new_m->base = mmap(NULL, new_m->realsize, PROT_READ | PROT_WRITE,
MAP_SHARED, tmpfd, 0);
/* FIXME: check for errors */
status = apr_file_close(file);
if (status != APR_SUCCESS) {
return status;
}
#endif /* APR_USE_SHMEM_MMAP_TMP */
#if APR_USE_SHMEM_MMAP_SHM
/* FIXME: SysV uses 0600... should we? */
tmpfd = shm_open(shm_name, O_RDWR | O_CREAT | O_EXCL, 0644);
if (tmpfd == -1) {
return errno;
}
status = apr_os_file_put(&file, &tmpfd,
APR_READ | APR_WRITE | APR_CREATE | APR_EXCL,
pool);
if (status != APR_SUCCESS) {
return status;
}
status = apr_file_trunc(file, new_m->realsize);
if (status != APR_SUCCESS && status != APR_ESPIPE) {
shm_unlink(shm_name); /* we're failing, remove the object */
return status;
}
new_m->base = mmap(NULL, new_m->realsize, PROT_READ | PROT_WRITE,
MAP_SHARED, tmpfd, 0);
/* FIXME: check for errors */
status = apr_file_close(file);
if (status != APR_SUCCESS) {
return status;
}
#endif /* APR_USE_SHMEM_MMAP_SHM */
/* store the real size in the metadata */
*(apr_size_t*)(new_m->base) = new_m->realsize;
/* metadata isn't usable */
new_m->usable = (char *)new_m->base + APR_ALIGN_DEFAULT(sizeof(apr_size_t));
apr_pool_cleanup_register(new_m->pool, new_m, shm_cleanup_owner,
apr_pool_cleanup_null);
*m = new_m;
return APR_SUCCESS;
#elif APR_USE_SHMEM_SHMGET
new_m->realsize = reqsize;
/* FIXME: APR_OS_DEFAULT is too permissive, switch to 600 I think. */
status = apr_file_open(&file, filename,
APR_FOPEN_WRITE | APR_FOPEN_CREATE | APR_FOPEN_EXCL,
APR_OS_DEFAULT, pool);
if (status != APR_SUCCESS) {
return status;
}
/* ftok() (on solaris at least) requires that the file actually
* exist before calling ftok(). */
new_m->shmkey = our_ftok(filename);
if (new_m->shmkey == (key_t)-1) {
apr_file_close(file);
return errno;
}
if ((new_m->shmid = shmget(new_m->shmkey, new_m->realsize,
SHM_R | SHM_W | IPC_CREAT | IPC_EXCL)) < 0) {
apr_file_close(file);
return errno;
}
if ((new_m->base = shmat(new_m->shmid, NULL, 0)) == (void *)-1) {
apr_file_close(file);
return errno;
}
new_m->usable = new_m->base;
if (shmctl(new_m->shmid, IPC_STAT, &shmbuf) == -1) {
apr_file_close(file);
return errno;
}
apr_uid_current(&uid, &gid, pool);
shmbuf.shm_perm.uid = uid;
shmbuf.shm_perm.gid = gid;
if (shmctl(new_m->shmid, IPC_SET, &shmbuf) == -1) {
apr_file_close(file);
return errno;
}
nbytes = sizeof(reqsize);
status = apr_file_write(file, (const void *)&reqsize,
&nbytes);
if (status != APR_SUCCESS) {
apr_file_close(file);
return status;
}
status = apr_file_close(file);
if (status != APR_SUCCESS) {
return status;
}
apr_pool_cleanup_register(new_m->pool, new_m, shm_cleanup_owner,
apr_pool_cleanup_null);
*m = new_m;
return APR_SUCCESS;
#else
return APR_ENOTIMPL;
#endif
}
}