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echo(1): Replace errexit() with err(3)

Browse Source 
Differential revision:	https://reviews.freebsd.org/D32501
Submitted by:	christos@
MFC after:	1 week
Sponsored by:	NVIDIA Networking
This commit is contained in:
Hans Petter Selasky 2021-11-09 22:09:46 +01:00
parent 11f09b17fe
commit 4c537df51a
1 changed files with 2 additions and 20 deletions
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22
bin/echo/echo.c
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@ -55,23 +55,6 @@ __FBSDID("$FreeBSD$");
#include <string.h>
#include <unistd.h>
/*
* Report an error and exit.
* Use it instead of err(3) to avoid linking-in stdio.
*/
static __dead2 void
errexit(const char *prog, const char *reason)
{
char *errstr = strerror(errno);
write(STDERR_FILENO, prog, strlen(prog));
write(STDERR_FILENO, ": ", 2);
write(STDERR_FILENO, reason, strlen(reason));
write(STDERR_FILENO, ": ", 2);
write(STDERR_FILENO, errstr, strlen(errstr));
write(STDERR_FILENO, "\n", 1);
exit(1);
}
int
main(int argc, char *argv[])
{
@ -80,7 +63,6 @@ main(int argc, char *argv[])
struct iovec *iov, *vp; /* Elements to write, current element. */
char space[] = " ";
char newline[] = "\n";
char *progname = argv[0];
if (caph_limit_stdio() < 0 || caph_enter() < 0)
err(1, "capsicum");
@ -96,7 +78,7 @@ main(int argc, char *argv[])
veclen = (argc >= 2) ? (argc - 2) * 2 + 1 : 0;
if ((vp = iov = malloc((veclen + 1) * sizeof(struct iovec))) == NULL)
errexit(progname, "malloc");
err(1, "malloc");
while (argv[0] != NULL) {
size_t len;
@ -135,7 +117,7 @@ main(int argc, char *argv[])
nwrite = (veclen > IOV_MAX) ? IOV_MAX : veclen;
if (writev(STDOUT_FILENO, iov, nwrite) == -1)
errexit(progname, "write");
err(1, "write");
iov += nwrite;
veclen -= nwrite;
}