minix/commands/talkd/finduser.c
Gianluca Guida cc17b27a2b Build NetBSD libc library in world in ELF mode.
3 sets of libraries are built now:
  . ack: all libraries that ack can compile (/usr/lib/i386/)
  . clang+elf: all libraries with minix headers (/usr/lib/)
  . clang+elf: all libraries with netbsd headers (/usr/netbsd/)

Once everything can be compiled with netbsd libraries and headers, the
/usr/netbsd hierarchy will be obsolete and its libraries compiled with
netbsd headers will be installed in /usr/lib, and its headers
in /usr/include. (i.e. minix libc and current minix headers set
will be gone.)

To use the NetBSD libc system (libraries + headers) before
it is the default libc, see:
   http://wiki.minix3.org/en/DevelopersGuide/UsingNetBSDCode
This wiki page also documents the maintenance of the patch
files of minix-specific changes to imported NetBSD code.

Changes in this commit:
  . libsys: Add NBSD compilation and create a safe NBSD-based libc.
  . Port rest of libraries (except libddekit) to new header system.
  . Enable compilation of libddekit with new headers.
  . Enable kernel compilation with new headers.
  . Enable drivers compilation with new headers.
  . Port legacy commands to new headers and libc.
  . Port servers to new headers.
  . Add <sys/sigcontext.h> in compat library.
  . Remove dependency file in tree.
  . Enable compilation of common/lib/libc/atomic in libsys
  . Do not generate RCSID strings in libc.
  . Temporarily disable zoneinfo as they are incompatible with NetBSD format
  . obj-nbsd for .gitignore
  . Procfs: use only integer arithmetic. (Antoine Leca)
  . Increase ramdisk size to create NBSD-based images.
  . Remove INCSYMLINKS handling hack.
  . Add nbsd_include/sys/exec_elf.h
  . Enable ELF compilation with NBSD libc.
  . Add 'make nbsdsrc' in tools to download reference NetBSD sources.
  . Automate minix-port.patch creation.
  . Avoid using fstavfs() as it is *extremely* slow and unneeded.
  . Set err() as PRIVATE to avoid name clash with libc.
  . [NBSD] servers/vm: remove compilation warnings.
  . u32 is not a long in NBSD headers.
  . UPDATING info on netbsd hierarchy
  . commands fixes for netbsd libc
2011-06-24 11:46:30 +02:00

48 lines
1,003 B
C

/* finduser.c Copyright Michael Temari 07/22/1996 All Rights Reserved */
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <fcntl.h>
#include <time.h>
#include <utmp.h>
#include <net/gen/in.h>
#include "talk.h"
#include "finduser.h"
int find_user(name, tty)
char *name;
char *tty;
{
int fd;
int ret;
struct utmp utmp;
/* Now find out if the requested user is logged in. */
if((fd = open(UTMP, O_RDONLY)) < 0) {
perror("talkd: opening UTMP file");
return(FAILED);
}
ret = NOT_HERE;
while(read(fd, &utmp, sizeof(struct utmp)) == sizeof(struct utmp)) {
if(utmp.ut_type != USER_PROCESS) continue;
#ifdef __NBSD_LIBC
if(strncmp(utmp.ut_name, name, sizeof(utmp.ut_name))) continue;
#else
if(strncmp(utmp.ut_user, name, sizeof(utmp.ut_user))) continue;
#endif
if(*tty && strncmp(utmp.ut_line, tty, sizeof(utmp.ut_line))) continue;
strcpy(tty, utmp.ut_line);
ret = SUCCESS;
break;
}
close(fd);
return(ret);
}