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Diffstat (limited to 'contrib/sendmail/libsm/local.h')
| -rw-r--r-- | contrib/sendmail/libsm/local.h | 328 |
1 files changed, 0 insertions, 328 deletions
diff --git a/contrib/sendmail/libsm/local.h b/contrib/sendmail/libsm/local.h deleted file mode 100644 index 6d64195d515e1..0000000000000 --- a/contrib/sendmail/libsm/local.h +++ /dev/null @@ -1,328 +0,0 @@ -/* - * Copyright (c) 2000-2002, 2004 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. - * - * $Id: local.h,v 1.53 2004/01/09 18:34:22 ca Exp $ - */ - -/* -** Information local to this implementation of stdio, -** in particular, macros and private variables. -*/ - -#include <sys/time.h> -#if !SM_CONF_MEMCHR -# include <memory.h> -#endif /* !SM_CONF_MEMCHR */ -#include <sm/heap.h> - -int sm_flush __P((SM_FILE_T *, int *)); -SM_FILE_T *smfp __P((void)); -int sm_refill __P((SM_FILE_T *, int)); -void sm_init __P((void)); -void sm_cleanup __P((void)); -void sm_makebuf __P((SM_FILE_T *)); -int sm_whatbuf __P((SM_FILE_T *, size_t *, int *)); -int sm_fwalk __P((int (*)(SM_FILE_T *, int *), int *)); -int sm_wsetup __P((SM_FILE_T *)); -int sm_flags __P((int)); -SM_FILE_T *sm_fp __P((const SM_FILE_T *, const int, SM_FILE_T *)); -int sm_vprintf __P((int, char const *, va_list)); - -/* std io functions */ -ssize_t sm_stdread __P((SM_FILE_T *, char *, size_t)); -ssize_t sm_stdwrite __P((SM_FILE_T *, char const *, size_t)); -off_t sm_stdseek __P((SM_FILE_T *, off_t, int)); -int sm_stdclose __P((SM_FILE_T *)); -int sm_stdopen __P((SM_FILE_T *, const void *, int, const void *)); -int sm_stdfdopen __P((SM_FILE_T *, const void *, int, const void *)); -int sm_stdsetinfo __P((SM_FILE_T *, int , void *)); -int sm_stdgetinfo __P((SM_FILE_T *, int , void *)); - -/* stdio io functions */ -ssize_t sm_stdioread __P((SM_FILE_T *, char *, size_t)); -ssize_t sm_stdiowrite __P((SM_FILE_T *, char const *, size_t)); -off_t sm_stdioseek __P((SM_FILE_T *, off_t, int)); -int sm_stdioclose __P((SM_FILE_T *)); -int sm_stdioopen __P((SM_FILE_T *, const void *, int, const void *)); -int sm_stdiosetinfo __P((SM_FILE_T *, int , void *)); -int sm_stdiogetinfo __P((SM_FILE_T *, int , void *)); - -/* string io functions */ -ssize_t sm_strread __P((SM_FILE_T *, char *, size_t)); -ssize_t sm_strwrite __P((SM_FILE_T *, char const *, size_t)); -off_t sm_strseek __P((SM_FILE_T *, off_t, int)); -int sm_strclose __P((SM_FILE_T *)); -int sm_stropen __P((SM_FILE_T *, const void *, int, const void *)); -int sm_strsetinfo __P((SM_FILE_T *, int , void *)); -int sm_strgetinfo __P((SM_FILE_T *, int , void *)); - -/* syslog io functions */ -ssize_t sm_syslogread __P((SM_FILE_T *, char *, size_t)); -ssize_t sm_syslogwrite __P((SM_FILE_T *, char const *, size_t)); -off_t sm_syslogseek __P((SM_FILE_T *, off_t, int)); -int sm_syslogclose __P((SM_FILE_T *)); -int sm_syslogopen __P((SM_FILE_T *, const void *, int, const void *)); -int sm_syslogsetinfo __P((SM_FILE_T *, int , void *)); -int sm_sysloggetinfo __P((SM_FILE_T *, int , void *)); - -/* should be defined in sys/time.h */ -#ifndef timersub -# define timersub(tvp, uvp, vvp) \ - do \ - { \ - (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ - (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ - if ((vvp)->tv_usec < 0) \ - { \ - (vvp)->tv_sec--; \ - (vvp)->tv_usec += 1000000; \ - } \ - } while (0) -#endif /* !timersub */ - -#ifndef timeradd -# define timeradd(tvp, uvp, vvp) \ - do \ - { \ - (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \ - (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \ - if ((vvp)->tv_usec >= 1000000) \ - { \ - (vvp)->tv_sec++; \ - (vvp)->tv_usec -= 1000000; \ - } \ - } while (0) -#endif /* !timeradd */ - -#ifndef timercmp -# define timercmp(tvp, uvp, cmp) \ - (((tvp)->tv_sec == (uvp)->tv_sec) ? \ - ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ - ((tvp)->tv_sec cmp (uvp)->tv_sec)) -#endif /* !timercmp */ - -extern bool Sm_IO_DidInit; - -/* Return true iff the given SM_FILE_T cannot be written now. */ -#define cantwrite(fp) \ - ((((fp)->f_flags & SMWR) == 0 || (fp)->f_bf.smb_base == NULL) && \ - sm_wsetup(fp)) - -/* -** Test whether the given stdio file has an active ungetc buffer; -** release such a buffer, without restoring ordinary unread data. -*/ - -#define HASUB(fp) ((fp)->f_ub.smb_base != NULL) -#define FREEUB(fp) \ -{ \ - if ((fp)->f_ub.smb_base != (fp)->f_ubuf) \ - sm_free((char *)(fp)->f_ub.smb_base); \ - (fp)->f_ub.smb_base = NULL; \ -} - -extern const char SmFileMagic[]; - -#define SM_ALIGN(p) (((unsigned long)(p) + SM_ALIGN_BITS) & ~SM_ALIGN_BITS) - -#define sm_io_flockfile(fp) ((void) 0) -#define sm_io_funlockfile(fp) ((void) 0) - -#ifndef FDSET_CAST -# define FDSET_CAST /* empty cast for fd_set arg to select */ -#endif - -/* -** SM_CONVERT_TIME -- convert the API timeout flag for select() usage. -** -** This takes a 'fp' (a file type pointer) and obtains the "raw" -** file descriptor (fd) if possible. The 'fd' is needed to possibly -** switch the mode of the file (blocking/non-blocking) to match -** the type of timeout. If timeout is SM_TIME_FOREVER then the -** timeout using select won't be needed and the file is best placed -** in blocking mode. If there is to be a finite timeout then the file -** is best placed in non-blocking mode. Then, if not enough can be -** written, select() can be used to test when something can be written -** yet still timeout if the wait is too long. -** If the mode is already in the correct state we don't change it. -** Iff (yes "iff") the 'fd' is "-1" in value then the mode change -** will not happen. This situation arises when a late-binding-to-disk -** file type is in use. An example of this is the sendmail buffered -** file type (in sendmail/bf.c). -** -** Parameters -** fp -- the file pointer the timeout is for -** fd -- to become the file descriptor value from 'fp' -** val -- the timeout value to be converted -** time -- a struct timeval holding the converted value -** -** Returns -** nothing, this is flow-through code -** -** Side Effects: -** May or may not change the mode of a currently open file. -** The file mode may be changed to O_NONBLOCK or ~O_NONBLOCK -** (meaning block). This is done to best match the type of -** timeout and for (possible) use with select(). -*/ - -# define SM_CONVERT_TIME(fp, fd, val, time) { \ - if (((fd) = sm_io_getinfo(fp, SM_IO_WHAT_FD, NULL)) == -1) \ - { \ - /* can't get an fd, likely internal 'fake' fp */ \ - errno = 0; \ - } \ - if ((val) == SM_TIME_DEFAULT) \ - (val) = (fp)->f_timeout; \ - if ((val) == SM_TIME_IMMEDIATE || (val) == SM_TIME_FOREVER) \ - { \ - (time)->tv_sec = 0; \ - (time)->tv_usec = 0; \ - } \ - else \ - { \ - (time)->tv_sec = (val) / 1000; \ - (time)->tv_usec = ((val) - ((time)->tv_sec * 1000)) * 10; \ - } \ - if ((val) == SM_TIME_FOREVER) \ - { \ - if ((fp)->f_timeoutstate == SM_TIME_NONBLOCK && (fd) != -1) \ - { \ - int ret; \ - ret = fcntl((fd), F_GETFL, 0); \ - if (ret == -1 || fcntl((fd), F_SETFL, \ - ret & ~O_NONBLOCK) == -1) \ - { \ - /* errno should be set */ \ - return SM_IO_EOF; \ - } \ - (fp)->f_timeoutstate = SM_TIME_BLOCK; \ - if ((fp)->f_modefp != NULL) \ - (fp)->f_modefp->f_timeoutstate = SM_TIME_BLOCK; \ - } \ - } \ - else { \ - if ((fp)->f_timeoutstate == SM_TIME_BLOCK && (fd) != -1) \ - { \ - int ret; \ - ret = fcntl((fd), F_GETFL, 0); \ - if (ret == -1 || fcntl((fd), F_SETFL, \ - ret | O_NONBLOCK) == -1) \ - { \ - /* errno should be set */ \ - return SM_IO_EOF; \ - } \ - (fp)->f_timeoutstate = SM_TIME_NONBLOCK; \ - if ((fp)->f_modefp != NULL) \ - (fp)->f_modefp->f_timeoutstate = SM_TIME_NONBLOCK; \ - } \ - } \ -} - -/* -** SM_IO_WR_TIMEOUT -- setup the timeout for the write -** -** This #define uses a select() to wait for the 'fd' to become writable. -** The select() can be active for up to 'to' time. The select may not -** use all of the the 'to' time. Hence, the amount of "wall-clock" time is -** measured to decide how much to subtract from 'to' to update it. On some -** BSD-based/like systems the timeout for a select is updated for the -** amount of time used. On many/most systems this does not happen. Therefore -** the updating of 'to' must be done ourselves; a copy of 'to' is passed -** since a BSD-like system will have updated it and we don't want to -** double the time used! -** Note: if a valid 'fd' doesn't exist yet, don't use this (e.g. the -** sendmail buffered file type in sendmail/bf.c; see fvwrite.c). -** -** Parameters -** fd -- a file descriptor for doing select() with -** timeout -- the original user set value. -** -** Returns -** nothing, this is flow through code -** -** Side Effects: -** adjusts 'timeout' for time used -*/ - -#define SM_IO_WR_TIMEOUT(fp, fd, to) { \ - struct timeval sm_io_to_before, sm_io_to_after, sm_io_to_diff; \ - struct timeval sm_io_to; \ - int sm_io_to_sel; \ - fd_set sm_io_to_mask, sm_io_x_mask; \ - errno = 0; \ - if ((to) == SM_TIME_DEFAULT) \ - (to) = (fp)->f_timeout; \ - if ((to) == SM_TIME_IMMEDIATE) \ - { \ - errno = EAGAIN; \ - return SM_IO_EOF; \ - } \ - else if ((to) == SM_TIME_FOREVER) \ - { \ - errno = EINVAL; \ - return SM_IO_EOF; \ - } \ - else \ - { \ - sm_io_to.tv_sec = (to) / 1000; \ - sm_io_to.tv_usec = ((to) - (sm_io_to.tv_sec * 1000)) * 10; \ - } \ - if (FD_SETSIZE > 0 && (fd) >= FD_SETSIZE) \ - { \ - errno = EINVAL; \ - return SM_IO_EOF; \ - } \ - FD_ZERO(&sm_io_to_mask); \ - FD_SET((fd), &sm_io_to_mask); \ - FD_ZERO(&sm_io_x_mask); \ - FD_SET((fd), &sm_io_x_mask); \ - if (gettimeofday(&sm_io_to_before, NULL) < 0) \ - return SM_IO_EOF; \ - sm_io_to_sel = select((fd) + 1, NULL, &sm_io_to_mask, &sm_io_x_mask, \ - &sm_io_to); \ - if (sm_io_to_sel < 0) \ - { \ - /* something went wrong, errno set */ \ - return SM_IO_EOF; \ - } \ - else if (sm_io_to_sel == 0) \ - { \ - /* timeout */ \ - errno = EAGAIN; \ - return SM_IO_EOF; \ - } \ - /* else loop again */ \ - if (gettimeofday(&sm_io_to_after, NULL) < 0) \ - return SM_IO_EOF; \ - timersub(&sm_io_to_before, &sm_io_to_after, &sm_io_to_diff); \ - timersub(&sm_io_to, &sm_io_to_diff, &sm_io_to); \ - (to) -= (sm_io_to.tv_sec * 1000); \ - (to) -= (sm_io_to.tv_usec / 10); \ - if ((to) < 0) \ - (to) = 0; \ -} - -/* -** If there is no 'fd' just error (we can't timeout). If the timeout -** is SM_TIME_FOREVER then there is no need to do a timeout with -** select since this will be a real error. If the error is not -** EAGAIN/EWOULDBLOCK (from a nonblocking) then it's a real error. -** Specify the condition here as macro so it can be used in several places. -*/ - -#define IS_IO_ERROR(fd, ret, to) \ - ((fd) < 0 || \ - ((ret) < 0 && errno != EAGAIN && errno != EWOULDBLOCK) || \ - (to) == SM_TIME_FOREVER) - |