diff options
Diffstat (limited to 'contrib/sendmail/libsm/makebuf.c')
| -rw-r--r-- | contrib/sendmail/libsm/makebuf.c | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/contrib/sendmail/libsm/makebuf.c b/contrib/sendmail/libsm/makebuf.c deleted file mode 100644 index 044de8c36f72..000000000000 --- a/contrib/sendmail/libsm/makebuf.c +++ /dev/null @@ -1,154 +0,0 @@ -/* - * Copyright (c) 2000-2001 Sendmail, Inc. and its suppliers. - * All rights reserved. - * Copyright (c) 1990, 1993 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Chris Torek. - * - * By using this file, you agree to the terms and conditions set - * forth in the LICENSE file which can be found at the top level of - * the sendmail distribution. - */ - -#include <sm/gen.h> -SM_RCSID("@(#)$Id: makebuf.c,v 1.26 2001/10/31 16:04:08 ca Exp $") -#include <stdlib.h> -#include <unistd.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <sm/io.h> -#include <sm/heap.h> -#include <sm/conf.h> -#include "local.h" - -/* -** SM_MAKEBUF -- make a buffer for the file -** -** Parameters: -** fp -- the file to be buffered -** -** Returns: -** nothing -** -** Allocate a file buffer, or switch to unbuffered I/O. -** By default tty devices default to line buffered. -*/ - -void -sm_makebuf(fp) - register SM_FILE_T *fp; -{ - register void *p; - register int flags; - size_t size; - int couldbetty; - - if (fp->f_flags & SMNBF) - { - fp->f_bf.smb_base = fp->f_p = fp->f_nbuf; - fp->f_bf.smb_size = 1; - return; - } - flags = sm_whatbuf(fp, &size, &couldbetty); - if ((p = sm_malloc(size)) == NULL) - { - fp->f_flags |= SMNBF; - fp->f_bf.smb_base = fp->f_p = fp->f_nbuf; - fp->f_bf.smb_size = 1; - return; - } - if (!Sm_IO_DidInit) - sm_init(); - flags |= SMMBF; - fp->f_bf.smb_base = fp->f_p = p; - fp->f_bf.smb_size = size; - if (couldbetty && isatty(fp->f_file)) - flags |= SMLBF; - fp->f_flags |= flags; -} - -/* -** SM_WHATBUF -- determine proper buffer for a file (internal) -** -** Plus it fills in 'bufsize' for recommended buffer size and -** fills in flag to indicate if 'fp' could be a tty (nothing -** to do with "betty" :-) ). -** -** Parameters: -** fp -- file pointer to be buffered -** bufsize -- new buffer size (a return) -** couldbetty -- could be a tty (returns) -** -** Returns: -** Success: -** on error: -** SMNPT -- not seek opimized -** SMOPT -- seek opimized -*/ - -int -sm_whatbuf(fp, bufsize, couldbetty) - register SM_FILE_T *fp; - size_t *bufsize; - int *couldbetty; -{ - struct stat st; - - if (fp->f_file < 0 || fstat(fp->f_file, &st) < 0) - { - *couldbetty = 0; - *bufsize = SM_IO_BUFSIZ; - return SMNPT; - } - - /* could be a tty iff it is a character device */ - *couldbetty = S_ISCHR(st.st_mode); - if (st.st_blksize == 0) - { - *bufsize = SM_IO_BUFSIZ; - return SMNPT; - } - -#if SM_IO_MAX_BUF_FILE > 0 - if (S_ISREG(st.st_mode) && st.st_blksize > SM_IO_MAX_BUF_FILE) - st.st_blksize = SM_IO_MAX_BUF_FILE; -#endif /* SM_IO_MAX_BUF_FILE > 0 */ - -#if SM_IO_MAX_BUF > 0 || SM_IO_MIN_BUF > 0 - if (!S_ISREG(st.st_mode)) - { -# if SM_IO_MAX_BUF > 0 - if (st.st_blksize > SM_IO_MAX_BUF) - st.st_blksize = SM_IO_MAX_BUF; -# if SM_IO_MIN_BUF > 0 - else -# endif /* SM_IO_MIN_BUF > 0 */ -# endif /* SM_IO_MAX_BUF > 0 */ -# if SM_IO_MIN_BUF > 0 - if (st.st_blksize < SM_IO_MIN_BUF) - st.st_blksize = SM_IO_MIN_BUF; -# endif /* SM_IO_MIN_BUF > 0 */ - } -#endif /* SM_IO_MAX_BUF > 0 || SM_IO_MIN_BUF > 0 */ - - /* - ** Optimise fseek() only if it is a regular file. (The test for - ** sm_std_seek is mainly paranoia.) It is safe to set _blksize - ** unconditionally; it will only be used if SMOPT is also set. - */ - - if ((fp->f_flags & SMSTR) == 0) - { - *bufsize = st.st_blksize; - fp->f_blksize = st.st_blksize; - } - else - *bufsize = SM_IO_BUFSIZ; - if ((st.st_mode & S_IFMT) == S_IFREG && - fp->f_seek == sm_stdseek) - return SMOPT; - else - return SMNPT; -} |