Date: Mon, 25 May 2026 17:03:08 +0000 From: Dag-Erling=?utf-8?Q? Sm=C3=B8rg?=rav <des@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 0f3e14870906 - main - lpd: Fix issues reported by clang-analyzer Message-ID: <6a1480cc.388b5.45c31314@gitrepo.freebsd.org>
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The branch main has been updated by des: URL: https://cgit.FreeBSD.org/src/commit/?id=0f3e14870906da22a7ca821fb2153d375157cac2 commit 0f3e14870906da22a7ca821fb2153d375157cac2 Author: Dag-Erling Smørgrav <des@FreeBSD.org> AuthorDate: 2026-05-25 16:51:53 +0000 Commit: Dag-Erling Smørgrav <des@FreeBSD.org> CommitDate: 2026-05-25 16:52:17 +0000 lpd: Fix issues reported by clang-analyzer Also, unlink our temporary file if we fail to chmod it. MFC after: 1 week Reviewed by: markj Differential Revision: https://reviews.freebsd.org/D57185 --- usr.sbin/lpr/lpd/printjob.c | 39 ++++++++++++++++++++------------------- 1 file changed, 20 insertions(+), 19 deletions(-) diff --git a/usr.sbin/lpr/lpd/printjob.c b/usr.sbin/lpr/lpd/printjob.c index 0e86e8de8fb9..5ed7f0409679 100644 --- a/usr.sbin/lpr/lpd/printjob.c +++ b/usr.sbin/lpr/lpd/printjob.c @@ -155,7 +155,7 @@ printjob(struct printer *pp) register int i, nitems; off_t pidoff; pid_t printpid; - int errcnt, jobcount, statok, tempfd; + int errcnt, jobcount, tempfd; jobcount = 0; init(pp); /* set up capabilities */ @@ -190,9 +190,6 @@ printjob(struct printer *pp) pp->spool_dir); exit(1); } - statok = stat(pp->lock_file, &stb); - if (statok == 0 && (stb.st_mode & LFM_PRINT_DIS)) - exit(0); /* printing disabled */ umask(S_IWOTH); lfd = open(pp->lock_file, O_WRONLY|O_CREAT|O_EXLOCK|O_NONBLOCK, LOCK_FILE_MODE); @@ -203,12 +200,14 @@ printjob(struct printer *pp) pp->lock_file); exit(1); } - /* - * If the initial call to stat() failed, then lock_file will have - * been created by open(). Update &stb to match that new file. - */ - if (statok != 0) - statok = stat(pp->lock_file, &stb); + if (fstat(lfd, &stb) != 0) { + syslog(LOG_ERR, "%s: fstat(%s): %m", pp->printer, + pp->lock_file); + exit(1); + } + if ((stb.st_mode & LFM_PRINT_DIS) != 0) { + exit(0); /* printing disabled */ + } /* turn off non-blocking mode (was turned on for lock effects only) */ if (fcntl(lfd, F_SETFL, 0) < 0) { syslog(LOG_ERR, "%s: fcntl(%s): %m", pp->printer, @@ -219,8 +218,7 @@ printjob(struct printer *pp) /* * write process id for others to know */ - sprintf(line, "%u\n", printpid); - pidoff = i = strlen(line); + pidoff = i = snprintf(line, sizeof(line), "%u\n", printpid); if (write(lfd, line, i) != i) { syslog(LOG_ERR, "%s: write(%s): %m", pp->printer, pp->lock_file); @@ -248,9 +246,10 @@ printjob(struct printer *pp) tempstderr); exit(1); } - if ((i = fchmod(tempfd, 0664)) == -1) { + if (fchmod(tempfd, 0664) == -1) { syslog(LOG_ERR, "%s: fchmod(%s): %m", pp->printer, tempstderr); + (void) unlink(tempstderr); exit(1); } /* lpd doesn't need it to be open, it just needs it to exist */ @@ -362,15 +361,18 @@ again: goto again; } -char fonts[4][50]; /* fonts for troff */ +char fonts[4][64]; /* fonts for troff */ -char ifonts[4][40] = { +char ifonts[4][64] = { _PATH_VFONTR, _PATH_VFONTI, _PATH_VFONTB, _PATH_VFONTS, }; +_Static_assert(sizeof(fonts) == sizeof(ifonts), "fonts != ifonts"); +_Static_assert(sizeof(fonts[0]) == sizeof(ifonts[0]), "fonts[0] != ifonts[0]"); + /* * The remaining part is the reading of the control file (cf) * and performing the various actions. @@ -394,10 +396,9 @@ printit(struct printer *pp, char *file) /* * Reset troff fonts. */ - for (i = 0; i < 4; i++) - strcpy(fonts[i], ifonts[i]); + memcpy(fonts, ifonts, sizeof(fonts)); sprintf(&width[2], "%ld", pp->page_width); - strcpy(indent+2, "0"); + strcpy(indent, "-i0"); /* initialize job-specific count of datafiles processed */ job_dfcnt = 0; @@ -945,7 +946,7 @@ sendit(struct printer *pp, char *file) strlcpy(indent+2, line + 1, sizeof(indent) - 2); } else if (line[0] >= 'a' && line[0] <= 'z') { dfcopies = 1; - strcpy(last, line); + memcpy(last, line, sizeof(last)); while ((i = get_line(cfp)) != 0) { if (strcmp(last, line) != 0) break;home | help
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