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lam: fail on I/O errors

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I/O errors should be reported; however lam currently does not
disambiguate between EOF because end-of-file was reached and EOF because
an I/O error occurred.
This commit changes lam to exit with EX_IOERR when an I/O error occurs.

Reviewed by:	imp, allanjude
Sponsored by:	Apple Inc.
Differential Revision:	https://reviews.freebsd.org/D45437
This commit is contained in:
Cosimo Cecchi 2024-06-06 17:24:07 +00:00 committed by Allan Jude
parent 60107d23d8
commit 4472fd66d0
1 changed files with 4 additions and 0 deletions
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4
usr.bin/lam/lam.c
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@ -43,6 +43,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
#define MAXOFILES 20
@ -212,6 +213,9 @@ gatherline(struct openfile *ip)
*p = '\0';
if (c == EOF) {
ip->eof = 1;
if (ferror(ip->fp)) {
err(EX_IOERR, NULL);
}
if (ip->fp == stdin)
fclose(stdin);
morefiles--;