/*
* Are these two really the same inode?
*/
int
samei(struct stat64 *sp, unsigned char *cp)
{
struct stat64 stb;
if (stat64((char *)cp, &stb) < 0)
return (0);
return (IDENTICAL((*sp), stb));
}
int
main(int argc, char **argv)
{
FILE *fi;
int c;
extern int optind;
int errflg = 0;
int stdinflg = 0;
int status = 0;
int estatus = 0;
struct stat source, target;
(void) setlocale(LC_ALL, "");
#if !defined(TEXT_DOMAIN) /* Should be defined by cc -D */
#define TEXT_DOMAIN "SYS_TEST" /* Use this only if it weren't */
#endif
(void) textdomain(TEXT_DOMAIN);
#ifdef STANDALONE
/*
* If the first argument is NULL,
* discard arguments until we find cat.
*/
if (argv[0][0] == '\0')
argc = getargv("cat", &argv, 0);
#endif
/*
* Process the options for cat.
*/
while ((c = getopt(argc, argv, "usvtebn")) != EOF) {
switch (c) {
case 'u':
/*
* If not standalone, set stdout to
* completely unbuffered I/O when
* the 'u' option is used.
*/
#ifndef STANDALONE
setbuf(stdout, (char *)NULL);
#endif
continue;
case 's':
/*
* The 's' option requests silent mode
* where no messages are written.
*/
silent++;
continue;
case 'v':
/*
* The 'v' option requests that non-printing
* characters (with the exception of newlines,
* form-feeds, and tabs) be displayed visibly.
*
* Control characters are printed as "^x".
* DEL characters are printed as "^?".
* Non-printable and non-contrlol characters with the
* 8th bit set are printed as "M-x".
*/
visi_mode++;
continue;
case 't':
/*
* When in visi_mode, this option causes tabs
* to be displayed as "^I".
*/
visi_tab++;
continue;
case 'e':
/*
* When in visi_mode, this option causes newlines
* and form-feeds to be displayed as "$" at the end
* of the line prior to the newline.
*/
visi_newline++;
continue;
case 'b':
/*
* Precede each line output with its line number,
* but omit the line numbers from blank lines.
*/
bflg++;
nflg++;
continue;
case 'n':
/*
* Precede each line output with its line number.
*/
nflg++;
continue;
case '?':
errflg++;
break;
}
break;
}
if (errflg) {
if (!silent)
(void) fprintf(stderr,
gettext("usage: cat [ -usvtebn ] [-|file] ...\n"));
exit(2);
}
/*
* Stat stdout to be sure it is defined.
*/
if (fstat(fileno(stdout), &target) < 0) {
if (!silent)
(void) fprintf(stderr,
gettext("cat: Cannot stat stdout\n"));
exit(2);
}
obsize = target.st_blksize;
/*
* If no arguments given, then use stdin for input.
*/
if (optind == argc) {
argc++;
stdinflg++;
}
/*
* Process each remaining argument,
* unless there is an error with stdout.
*/
for (argv = &argv[optind];
optind < argc && !ferror(stdout); optind++, argv++) {
/*
* If the argument was '-' or there were no files
* specified, take the input from stdin.
*/
if (stdinflg ||
((*argv)[0] == '-' && (*argv)[1] == '\0'))
fi = stdin;
else {
/*
* Attempt to open each specified file.
*/
if ((fi = fopen(*argv, "r")) == NULL) {
if (!silent)
(void) fprintf(stderr,
gettext("cat: cannot open %s: %s\n"),
*argv, strerror(errno));
status = 2;
continue;
}
}
/*
* Stat source to make sure it is defined.
*/
if (fstat(fileno(fi), &source) < 0) {
if (!silent)
(void) fprintf(stderr,
gettext("cat: cannot stat %s: %s\n"),
(stdinflg) ? "-" : *argv, strerror(errno));
status = 2;
continue;
}
/*
* If the source is not a character special file, socket or a
* block special file, make sure it is not identical
* to the target.
*/
if (!S_ISCHR(target.st_mode) &&
!S_ISBLK(target.st_mode) &&
!S_ISSOCK(target.st_mode) &&
IDENTICAL(target, source)) {
if (!silent)
(void) fprintf(stderr,
gettext("cat: input/output files '%s' identical\n"),
stdinflg?"-": *argv);
if (fclose(fi) != 0)
(void) fprintf(stderr,
gettext("cat: close error: %s\n"),
strerror(errno));
status = 2;
continue;
}
ibsize = source.st_blksize;
/*
* If in visible mode and/or nflg, use vncat;
* otherwise, use cat.
*/
if (visi_mode || nflg)
estatus = vncat(fi);
else
estatus = cat(fi, &source, &target,
fi != stdin ? *argv : "standard input");
if (estatus)
status = estatus;
/*
* If the input is not stdin, close the source file.
*/
if (fi != stdin) {
if (fclose(fi) != 0)
if (!silent)
(void) fprintf(stderr,
gettext("cat: close error: %s\n"),
strerror(errno));
}
}
/*
* Display any error with stdout operations.
*/
if (fclose(stdout) != 0) {
if (!silent)
perror(gettext("cat: close error"));
status = 2;
}
return (status);
}
