Date: Fri, 19 Dec 2008 20:20:14 +0000 (UTC) From: "David E. O'Brien" <obrien@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r186337 - head/usr.sbin/burncd Message-ID: <200812192020.mBJKKEIo081792@svn.freebsd.org>
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Author: obrien Date: Fri Dec 19 20:20:14 2008 New Revision: 186337 URL: http://svn.freebsd.org/changeset/base/186337 Log: burncd(8) doesn't handle signals and interrupting burncd during operation. For example, ^C (SIGINT) may leave the drive spinning and locked. This may also happen if you try to write a too-large image to a disc and burncd(8) exits with an I/O error. Add signal handling by doing a CDRIOCFLUSH ioctl to attempt to leave burner in a sane state when burning is interrupted with SIGHUP, SIGINT, SIGTERM, or in case an I/O error occurs during write. Note, that blanking will still continue after interrupt but it seems to finish correctly even after burncd(8) has quit. Also, while I'm here bump WARNS to "6". PR: 48730 Submitted by: Jaakko Heinonen <jh@saunalahti.fi> Modified: head/usr.sbin/burncd/Makefile head/usr.sbin/burncd/burncd.c Modified: head/usr.sbin/burncd/Makefile ============================================================================== --- head/usr.sbin/burncd/Makefile Fri Dec 19 20:19:59 2008 (r186336) +++ head/usr.sbin/burncd/Makefile Fri Dec 19 20:20:14 2008 (r186337) @@ -3,6 +3,6 @@ PROG= burncd MAN= burncd.8 -WARNS?= 5 +WARNS?= 6 .include <bsd.prog.mk> Modified: head/usr.sbin/burncd/burncd.c ============================================================================== --- head/usr.sbin/burncd/burncd.c Fri Dec 19 20:19:59 2008 (r186336) +++ head/usr.sbin/burncd/burncd.c Fri Dec 19 20:20:14 2008 (r186337) @@ -29,6 +29,7 @@ */ #include <unistd.h> +#include <signal.h> #include <stdint.h> #include <stdio.h> #include <stdlib.h> @@ -67,6 +68,8 @@ int write_file(int fd, struct track_info int roundup_blocks(struct track_info *); void cue_ent(struct cdr_cue_entry *, int, int, int, int, int, int, int); void cleanup(int); +void cleanup_flush(void); +void cleanup_signal(int); void usage(void); int @@ -157,6 +160,9 @@ main(int argc, char **argv) global_fd_for_cleanup = fd; err_set_exit(cleanup); + signal(SIGHUP, cleanup_signal); + signal(SIGINT, cleanup_signal); + signal(SIGTERM, cleanup_signal); for (arg = 0; arg < argc; arg++) { if (!strcasecmp(argv[arg], "fixate")) { @@ -319,6 +325,10 @@ main(int argc, char **argv) if (eject) if (ioctl(fd, CDIOCEJECT) < 0) err(EX_IOERR, "ioctl(CDIOCEJECT)"); + + signal(SIGHUP, SIG_DFL); + signal(SIGINT, SIG_DFL); + signal(SIGTERM, SIG_DFL); close(fd); exit(EX_OK); } @@ -469,8 +479,10 @@ do_DAO(int fd, int test_write, int multi err(EX_IOERR, "ioctl(CDRIOCSENDCUE)"); for (i = 0; i < notracks; i++) { - if (write_file(fd, &tracks[i])) + if (write_file(fd, &tracks[i])) { + cleanup_flush(); err(EX_IOERR, "write_file"); + } } ioctl(fd, CDRIOCFLUSH); @@ -499,8 +511,10 @@ do_TAO(int fd, int test_write, int preem if (!quiet) fprintf(stderr, "next writeable LBA %d\n", tracks[i].addr); - if (write_file(fd, &tracks[i])) + if (write_file(fd, &tracks[i])) { + cleanup_flush(); err(EX_IOERR, "write_file"); + } if (ioctl(fd, CDRIOCFLUSH) < 0) err(EX_IOERR, "ioctl(CDRIOCFLUSH)"); } @@ -630,9 +644,11 @@ write_file(int fd, struct track_info *tr track_info->block_size; } if ((res = write(fd, buf, count)) != count) { - if (res == -1) - fprintf(stderr, "\n%s\n", strerror(errno)); - else + if (res == -1) { + fprintf(stderr, "\n"); + close(track_info->file); + return errno; + } else fprintf(stderr, "\nonly wrote %d of %jd" " bytes\n", res, (intmax_t)count); break; @@ -693,6 +709,21 @@ cleanup(int dummy __unused) } void +cleanup_flush(void) +{ + if (ioctl(global_fd_for_cleanup, CDRIOCFLUSH) < 0) + err(EX_IOERR, "ioctl(CDRIOCFLUSH)"); +} + +void +cleanup_signal(int sig __unused) +{ + cleanup_flush(); + fprintf(stderr, "\n"); + errx(EXIT_FAILURE, "Aborted"); +} + +void usage(void) { fprintf(stderr,
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