home *** CD-ROM | disk | FTP | other *** search
- Submitted-by: lewine@cheshirecat.webo.dg.com (Donald Lewine)
-
- In article <4369@rwthinf.UUCP>, berg@physik.tu-muenchen.de (Stephen R. van den Berg) writes:
- |> Could someone knowledgable please tell me if the following include files,
- |> the mentioned identifiers and the include files they are 'allocated' to are
- |> all conform the POSIX standard? (I dont't have any POSIX literature,
- |> so all the data I present here are educated guesses).
-
- To solve this problem at less than half the price of the IEEE
- standard, and get much more information, see below. . .
-
- |>
- #include <unistd.h>
- ^^^^^^^^^^^^^^^^^^ unistd.h contains the prototypes for the
- functions you list and should be included in
- an ANSI C system.
- |> /* open() read() write() close() dup() pipe()
- |> fork() getpid() execve() execvp() */
- |> #include <stdio.h> /* sscanf() setbuf() fclose() stdin stdout
- |> stderr fopen() fread() fwrite() fgetc()
- |> getchar() FILE */
- |> #include <stddef.h> /* EOF */
- NO. EOF is defined in <stdio.h>.
- <stddef.h> defines:
- NULL, offsetof, ptrdiff_t, size_t, wchar_t
- |> #include <stdlib.h> /* getenv() memmove() malloc() realloc()
- |> free() strtol() size_t */
- memmove() is in <string.h> all others are
- in <stdlib.h>
- |> #include <time.h> /* time() ctime() time_t */
- |> #include <fcntl.h> /* O_RDONLY O_WRONLY O_APPEND O_SYNC */
- O_SYNC is not a POSIX symbol
- |> #include <pwd.h> /* setpwent() getpwuid() endpwent() */
- setpwent() is not in POSIX.1 (admin func)
- endpwent() is not in POSIX (not needed)
- |> #include <sys/wait.h> /* wait() */
- |> #include <sys/utsname.h> /* uname() utsname */
- |> #include <sys/types.h> /* pid_t mode_t struct stat */
- struct stat is in <sys/stat.h>
- |> #include <sys/stat.h> /* stat() S_ISDIR() */
- |> #include <signal.h> /* signal() kill() */
- |> #include <string.h> /* strcpy() strncpy() strcat() strlen()
- |> strspn() strcspn() strchr() strcmp()
- |> strncmp() strpbrk() strstr() */
- |> #include <errno.h> /* EINTR EEXIST EMFILE ENFILE */
-
- The header files contain symbols in addition to the ones you list.
- A complete listing of the POSIX headers is in Appendix A of the
- POSIX Programmer's Guide available for $34.95 from:
-
- O'Reilly and Associates, Inc.
- 632 Petaluma Ave
- Sebastopol, CA 95472
- (800) 338-6887
- uunet!ora!nuts
- nuts@ora.uu.net
-
- In my not so humble opinion, the POSIX Programmer's Guide is
- required reading for anyone who wants to write programs that
- work on all POSIX systems.
-
- --------------------------------------------------------------------
- Donald A. Lewine (508) 870-9008 Voice
- Data General Corporation (508) 366-0750 FAX
- 4400 Computer Drive. MS D112A
- Westboro, MA 01580 U.S.A.
-
- uucp: uunet!dg!lewine Internet: lewine@cheshirecat.webo.dg.com
-
-
- Volume-Number: Volume 23, Number 100
-
-