From dba44ab216e091b3ad3ac0abe1f3d98f35f0f7d0 Mon Sep 17 00:00:00 2001 From: bapt Date: Sat, 31 Oct 2015 09:32:39 +0000 Subject: [PATCH] MFC: 289879 newsyslog.conf: allow to configure the signal using the signal name. Submitted by: Alexandre Perrin Relnotes: yes Differential Revision: https://reviews.freebsd.org/D3961 git-svn-id: svn://svn.freebsd.org/base/stable/10@290225 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f --- usr.sbin/newsyslog/newsyslog.c | 45 ++++++++++++++++++++++------- usr.sbin/newsyslog/newsyslog.conf.5 | 19 ++++++++---- 2 files changed, 48 insertions(+), 16 deletions(-) diff --git a/usr.sbin/newsyslog/newsyslog.c b/usr.sbin/newsyslog/newsyslog.c index b63234b11..24e48826e 100644 --- a/usr.sbin/newsyslog/newsyslog.c +++ b/usr.sbin/newsyslog/newsyslog.c @@ -280,6 +280,7 @@ static int age_old_log(const char *file); static void savelog(char *from, char *to); static void createdir(const struct conf_entry *ent, char *dirpart); static void createlog(const struct conf_entry *ent); +static int parse_signal(const char *str); /* * All the following take a parameter of 'int', but expect values in the @@ -1338,12 +1339,13 @@ parse_file(FILE *cf, struct cflist *work_p, struct cflist *glob_p, if (q && *q) { if (*q == '/') working->pid_cmd_file = strdup(q); - else if (isdigit(*q)) + else if (isalnum(*q)) goto got_sig; - else + else { errx(1, - "illegal pid file or signal number in config file:\n%s", + "illegal pid file or signal in config file:\n%s", errline); + } } if (eol) q = NULL; @@ -1354,17 +1356,13 @@ parse_file(FILE *cf, struct cflist *work_p, struct cflist *glob_p, working->sig = SIGHUP; if (q && *q) { - if (isdigit(*q)) { - got_sig: - working->sig = atoi(q); - } else { - err_sig: +got_sig: + working->sig = parse_signal(q); + if (working->sig < 1 || working->sig >= sys_nsig) { errx(1, - "illegal signal number in config file:\n%s", + "illegal signal in config file:\n%s", errline); } - if (working->sig < 1 || working->sig >= NSIG) - goto err_sig; } /* @@ -2662,3 +2660,28 @@ change_attrs(const char *fname, const struct conf_entry *ent) warn("can't chflags %s NODUMP", fname); } } + +/* + * Parse a signal number or signal name. Returns the signal number parsed or -1 + * on failure. + */ +static int +parse_signal(const char *str) +{ + int sig, i; + const char *errstr; + + sig = strtonum(str, 1, sys_nsig - 1, &errstr); + + if (errstr == NULL) + return (sig); + if (strncasecmp(str, "SIG", 3) == 0) + str += 3; + + for (i = 1; i < sys_nsig; i++) { + if (strcasecmp(str, sys_signame[i]) == 0) + return (i); + } + + return (-1); +} diff --git a/usr.sbin/newsyslog/newsyslog.conf.5 b/usr.sbin/newsyslog/newsyslog.conf.5 index a053f2f01..0d28aabb2 100644 --- a/usr.sbin/newsyslog/newsyslog.conf.5 +++ b/usr.sbin/newsyslog/newsyslog.conf.5 @@ -21,7 +21,7 @@ .\" the suitability of this software for any purpose. It is .\" provided "as is" without express or implied warranty. .\" -.Dd March 21, 2012 +.Dd October 24, 2015 .Dt NEWSYSLOG.CONF 5 .Os .Sh NAME @@ -337,7 +337,7 @@ process ID or to find a group process ID if the .Cm U flag was specified. If this field is present, a -.Ar signal_number +.Ar signal is sent to the process ID contained in this file. If this field is not present and the .Cm N @@ -358,14 +358,23 @@ flag, the file is treated as a path to a binary to be executed by the .Xr newsyslog 8 after rotation instead of sending the signal out. -.It Ar signal_number -This optional field specifies the signal number that will be sent -to the daemon process (or to all processes in a process group, if the +.It Ar signal +This optional field specifies the signal that will be sent to the daemon +process (or to all processes in a process group, if the .Cm U flag was specified). If this field is not present, then a .Dv SIGHUP signal will be sent. +Signal names +must start with +.Dq SIG +and be the signal name, e.g., +.Dv SIGUSR1 . +Alternatively, +.Ar signal +can be the signal number, e.g., 30 for +.Dv SIGUSR1 . .El .Sh EXAMPLES The following is an example of the -- 2.45.0