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Diffstat (limited to 'bdb/docs/ref/program/solaris.txt')
| -rw-r--r-- | bdb/docs/ref/program/solaris.txt | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/bdb/docs/ref/program/solaris.txt b/bdb/docs/ref/program/solaris.txt deleted file mode 100644 index d2ec3168242..00000000000 --- a/bdb/docs/ref/program/solaris.txt +++ /dev/null @@ -1,213 +0,0 @@ -#ifdef OS_solaris - * This is all for Solaris 2.6. - * - * Sun defined a new API in Solaris2.6 to be used when manipulating large - * (>2Gbyte) files. This API isn't present in 2.5.x, so we can't simply - * call it -- that would mean two binaries, one for 2.5.x and the other for - * 2.6. Not pretty. So, what we do here is determine the OS on which we're - * running at runtime, and adjust the underlying Berkeley DB calls to use - * the new API if it's there. - */ - -/* This must match the definition of stat64 in Solaris2.6 */ -struct our_stat64 { - dev_t st_dev; - long st_pad1[3]; /* reserve for dev expansion */ - u_longlong_t st_ino; - mode_t st_mode; - nlink_t st_nlink; - uid_t st_uid; - gid_t st_gid; - dev_t st_rdev; - long st_pad2[2]; - longlong_t st_size; - timestruc_t mst_atime; - timestruc_t mst_mtime; - timestruc_t mst_ctime; - long st_blksize; - longlong_t st_blocks; /* large file support */ - char st_fstype[_ST_FSTYPSZ]; - long st_pad4[8]; /* expansion area */ -}; - -#define MEGABYTE (1024 * 1024) - -typedef int (*open_fn)(const char *path, int flags, ...); -typedef longlong_t (*lseek64_fn)(int fildes, longlong_t offset, int whence); -typedef longlong_t (*fstat64_fn)(int fildes, struct our_stat64 *s); -typedef void* (*mmap64_fn)(void* addr, size_t len, int prot, int flags, -int filedes, longlong_t off); - -static fstat64_fn os_fstat64_fn = NULL; -static lseek64_fn os_lseek64_fn = NULL; -static mmap64_fn os_mmap64_fn = NULL; -static open_fn os_open64_fn = NULL; - -static int dblayer_load_largefile_fns() -{ - void *lib_handle = NULL; - void *function_found = NULL; - int ret = 0; - - lib_handle = dlopen(NULL, RTLD_NOW); - if (NULL == lib_handle) - return (-1); - - function_found = dlsym(lib_handle,"open64"); - if (NULL == function_found) - return (-1); - os_open64_fn = (open_fn)function_found; - - function_found = dlsym(lib_handle,"lseek64"); - if (NULL == function_found) - return (-1); - os_lseek64_fn = (lseek64_fn)function_found; - - function_found = dlsym(lib_handle,"fstat64"); - if (NULL == function_found) - return (-1); - os_fstat64_fn = (fstat64_fn)function_found; - - function_found = dlsym(lib_handle,"mmap64"); - if (NULL == function_found) - return (-1); - os_mmap64_fn = (mmap64_fn)function_found; - - return 0; -} - -/* Helper function for large seeks */ -static int dblayer_seek_fn_solaris(int fd, - size_t pgsize, db_pgno_t pageno, u_long relative, int whence) -{ - longlong_t offset = 0; - longlong_t ret = 0; - - if (NULL == os_lseek64_fn) { - return -1; - } - - offset = (longlong_t)pgsize * pageno + relative; - - ret = (*os_lseek64_fn)(fd,offset,whence); - - return (ret == -1) ? errno : 0; -} - -/* Helper function for large file mmap */ -static int dblayer_map_solaris(fd, len, is_private, is_rdonly, addr) - int fd, is_private, is_rdonly; - size_t len; - void **addr; -{ - void *p; - int flags, prot; - - flags = is_private ? MAP_PRIVATE : MAP_SHARED; - prot = PROT_READ | (is_rdonly ? 0 : PROT_WRITE); - - if ((p = (*os_mmap64_fn)(NULL, - len, prot, flags, fd, (longlong_t)0)) == (void *)MAP_FAILED) - return (errno); - - *addr = p; - return (0); -} - -/* Helper function for large fstat */ -static int dblayer_ioinfo_solaris(const char *path, - int fd, u_int32_t *mbytesp, u_int32_t *bytesp, u_int32_t *iosizep) -{ - struct our_stat64 sb; - - if (NULL == os_fstat64_fn) { - return -1; - } - - if ((*os_fstat64_fn)(fd, &sb) == -1) - return (errno); - - /* Return the size of the file. */ - if (mbytesp != NULL) - *mbytesp = (u_int32_t) (sb.st_size / (longlong_t)MEGABYTE); - if (bytesp != NULL) - *bytesp = (u_int32_t) (sb.st_size % (longlong_t)MEGABYTE); - - /* - * Return the underlying filesystem blocksize, if available. Default - * to 8K on the grounds that most OS's use less than 8K as their VM - * page size. - */ - if (iosizep != NULL) - *iosizep = sb.st_blksize; - return (0); -} -#endif - -#ifdef irix - * A similar mess to Solaris: a new API added in IRIX6.2 to support large - * files. We always build on 6.2 or later, so no need to do the same song - * and dance as on Solaris -- we always have the header files for the - * 64-bit API. - */ - -/* Helper function for large seeks */ -static int dblayer_seek_fn_irix(int fd, - size_t pgsize, db_pgno_t pageno, u_long relative, int whence) -{ - off64_t offset = 0; - off64_t ret = 0; - - offset = (off64_t)pgsize * pageno + relative; - - ret = lseek64(fd,offset,whence); - - return (ret == -1) ? errno : 0; -} - -/* Helper function for large fstat */ -static int dblayer_ioinfo_irix(const char *path, - int fd, u_int32_t *mbytesp, u_int32_t *bytesp, u_int32_t *iosizep) -{ - struct stat64 sb; - - if (fstat64(fd, &sb) == -1) { - return (errno); - } - - /* Return the size of the file. */ - if (mbytesp != NULL) - *mbytesp = (u_int32_t) (sb.st_size / (off64_t)MEGABYTE); - if (bytesp != NULL) - *bytesp = (u_int32_t) (sb.st_size % (off64_t)MEGABYTE); - - if (iosizep != NULL) - *iosizep = sb.st_blksize; - return (0); -} -#endif /* irix */ - -static int dblayer_override_libdb_functions(dblayer_private *priv) -{ -#if defined(OS_solaris) - int ret = 0; - - ret = dblayer_load_largefile_fns(); - if (0 != ret) { - Debug("Not Solaris2.6: no large file support enabled\n"); - } else { - /* Means we did get the XXX64 functions, so let's use them */ - db_jump_set((void*)os_open64_fn, DB_FUNC_OPEN); - db_jump_set((void*)dblayer_seek_fn_solaris, DB_FUNC_SEEK); - db_jump_set((void*)dblayer_ioinfo_solaris, DB_FUNC_IOINFO); - db_jump_set((void*)dblayer_map_solaris, DB_FUNC_MAP); - Debug("Solaris2.6: selected 64-bit file handling.\n"); - } -#else -#if defined (irix) - db_jump_set((void*)dblayer_seek_fn_irix, DB_FUNC_SEEK); - db_jump_set((void*)dblayer_ioinfo_irix, DB_FUNC_IOINFO); -#endif /* irix */ -#endif /* OS_solaris */ - return 0; -} |