Date: Mon, 31 Jul 2017 08:19:44 +0000 (UTC) From: Ed Maste <emaste@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r321770 - stable/11/usr.bin/ar Message-ID: <201707310819.v6V8JiBc019789@repo.freebsd.org>
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Author: emaste Date: Mon Jul 31 08:19:44 2017 New Revision: 321770 URL: https://svnweb.freebsd.org/changeset/base/321770 Log: MFC r321436: ar: handle partial writes from archive_write_data libarchive may limit a single archive_write_data call to handling 0x7fffffff bytes. Add a loop to handle partial writes. Sponsored by: The FreeBSD Foundation Modified: stable/11/usr.bin/ar/write.c Directory Properties: stable/11/ (props changed) Modified: stable/11/usr.bin/ar/write.c ============================================================================== --- stable/11/usr.bin/ar/write.c Mon Jul 31 08:16:12 2017 (r321769) +++ stable/11/usr.bin/ar/write.c Mon Jul 31 08:19:44 2017 (r321770) @@ -586,10 +586,17 @@ prefault_buffer(const char *buf, size_t s) static void write_data(struct bsdar *bsdar, struct archive *a, const void *buf, size_t s) { + ssize_t written; + prefault_buffer(buf, s); - if (archive_write_data(a, buf, s) != (ssize_t)s) - bsdar_errc(bsdar, EX_SOFTWARE, 0, "%s", - archive_error_string(a)); + while (s > 0) { + written = archive_write_data(a, buf, s); + if (written < 0) + bsdar_errc(bsdar, EX_SOFTWARE, 0, "%s", + archive_error_string(a)); + buf = (const char *)buf + written; + s -= written; + } } /*
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