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confile: move signal helpers to confile utils

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Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Christian Brauner 2018-07-16 11:10:01 +02:00
parent 63f9c9e607
commit f6e32eb05b
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GPG Key ID: 8EB056D53EECB12D
3 changed files with 134 additions and 133 deletions
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133
src/lxc/confile.c
View File

@ -238,90 +238,6 @@ static struct lxc_config_t config[] = {
{ "lxc.proc", set_config_proc, get_config_proc, clr_config_proc, },
};
struct signame {
int num;
const char *name;
};
static const struct signame signames[] = {
{ SIGHUP, "HUP" },
{ SIGINT, "INT" },
{ SIGQUIT, "QUIT" },
{ SIGILL, "ILL" },
{ SIGABRT, "ABRT" },
{ SIGFPE, "FPE" },
{ SIGKILL, "KILL" },
{ SIGSEGV, "SEGV" },
{ SIGPIPE, "PIPE" },
{ SIGALRM, "ALRM" },
{ SIGTERM, "TERM" },
{ SIGUSR1, "USR1" },
{ SIGUSR2, "USR2" },
{ SIGCHLD, "CHLD" },
{ SIGCONT, "CONT" },
{ SIGSTOP, "STOP" },
{ SIGTSTP, "TSTP" },
{ SIGTTIN, "TTIN" },
{ SIGTTOU, "TTOU" },
#ifdef SIGTRAP
{ SIGTRAP, "TRAP" },
#endif
#ifdef SIGIOT
{ SIGIOT, "IOT" },
#endif
#ifdef SIGEMT
{ SIGEMT, "EMT" },
#endif
#ifdef SIGBUS
{ SIGBUS, "BUS" },
#endif
#ifdef SIGSTKFLT
{ SIGSTKFLT, "STKFLT" },
#endif
#ifdef SIGCLD
{ SIGCLD, "CLD" },
#endif
#ifdef SIGURG
{ SIGURG, "URG" },
#endif
#ifdef SIGXCPU
{ SIGXCPU, "XCPU" },
#endif
#ifdef SIGXFSZ
{ SIGXFSZ, "XFSZ" },
#endif
#ifdef SIGVTALRM
{ SIGVTALRM, "VTALRM" },
#endif
#ifdef SIGPROF
{ SIGPROF, "PROF" },
#endif
#ifdef SIGWINCH
{ SIGWINCH, "WINCH" },
#endif
#ifdef SIGIO
{ SIGIO, "IO" },
#endif
#ifdef SIGPOLL
{ SIGPOLL, "POLL" },
#endif
#ifdef SIGINFO
{ SIGINFO, "INFO" },
#endif
#ifdef SIGLOST
{ SIGLOST, "LOST" },
#endif
#ifdef SIGPWR
{ SIGPWR, "PWR" },
#endif
#ifdef SIGUNUSED
{ SIGUNUSED, "UNUSED" },
#endif
#ifdef SIGSYS
{ SIGSYS, "SYS" },
#endif
};
static const size_t config_size = sizeof(config) / sizeof(struct lxc_config_t);
struct lxc_config_t *lxc_get_config(const char *key)
@ -1260,55 +1176,6 @@ static int set_config_autodev(const char *key, const char *value,
return 0;
}
static int sig_num(const char *sig)
{
unsigned int signum;
if (lxc_safe_uint(sig, &signum) < 0)
return -1;
return signum;
}
static int rt_sig_num(const char *signame)
{
int rtmax = 0, sig_n = 0;
if (strncasecmp(signame, "max-", 4) == 0) {
rtmax = 1;
}
signame += 4;
if (!isdigit(*signame))
return -1;
sig_n = sig_num(signame);
sig_n = rtmax ? SIGRTMAX - sig_n : SIGRTMIN + sig_n;
if (sig_n > SIGRTMAX || sig_n < SIGRTMIN)
return -1;
return sig_n;
}
static int sig_parse(const char *signame)
{
size_t n;
if (isdigit(*signame)) {
return sig_num(signame);
} else if (strncasecmp(signame, "sig", 3) == 0) {
signame += 3;
if (strncasecmp(signame, "rt", 2) == 0)
return rt_sig_num(signame + 2);
for (n = 0; n < sizeof(signames) / sizeof((signames)[0]); n++) {
if (strcasecmp(signames[n].name, signame) == 0)
return signames[n].num;
}
}
return -1;
}
static int set_config_signal_halt(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{

133
src/lxc/confile_utils.c
View File

@ -778,3 +778,136 @@ int lxc_inherit_namespace(const char *lxcname_or_pid, const char *lxcpath,
return fd;
}
struct signame {
int num;
const char *name;
};
static const struct signame signames[] = {
{ SIGHUP, "HUP" },
{ SIGINT, "INT" },
{ SIGQUIT, "QUIT" },
{ SIGILL, "ILL" },
{ SIGABRT, "ABRT" },
{ SIGFPE, "FPE" },
{ SIGKILL, "KILL" },
{ SIGSEGV, "SEGV" },
{ SIGPIPE, "PIPE" },
{ SIGALRM, "ALRM" },
{ SIGTERM, "TERM" },
{ SIGUSR1, "USR1" },
{ SIGUSR2, "USR2" },
{ SIGCHLD, "CHLD" },
{ SIGCONT, "CONT" },
{ SIGSTOP, "STOP" },
{ SIGTSTP, "TSTP" },
{ SIGTTIN, "TTIN" },
{ SIGTTOU, "TTOU" },
#ifdef SIGTRAP
{ SIGTRAP, "TRAP" },
#endif
#ifdef SIGIOT
{ SIGIOT, "IOT" },
#endif
#ifdef SIGEMT
{ SIGEMT, "EMT" },
#endif
#ifdef SIGBUS
{ SIGBUS, "BUS" },
#endif
#ifdef SIGSTKFLT
{ SIGSTKFLT, "STKFLT" },
#endif
#ifdef SIGCLD
{ SIGCLD, "CLD" },
#endif
#ifdef SIGURG
{ SIGURG, "URG" },
#endif
#ifdef SIGXCPU
{ SIGXCPU, "XCPU" },
#endif
#ifdef SIGXFSZ
{ SIGXFSZ, "XFSZ" },
#endif
#ifdef SIGVTALRM
{ SIGVTALRM, "VTALRM" },
#endif
#ifdef SIGPROF
{ SIGPROF, "PROF" },
#endif
#ifdef SIGWINCH
{ SIGWINCH, "WINCH" },
#endif
#ifdef SIGIO
{ SIGIO, "IO" },
#endif
#ifdef SIGPOLL
{ SIGPOLL, "POLL" },
#endif
#ifdef SIGINFO
{ SIGINFO, "INFO" },
#endif
#ifdef SIGLOST
{ SIGLOST, "LOST" },
#endif
#ifdef SIGPWR
{ SIGPWR, "PWR" },
#endif
#ifdef SIGUNUSED
{ SIGUNUSED, "UNUSED" },
#endif
#ifdef SIGSYS
{ SIGSYS, "SYS" },
#endif
};
static int sig_num(const char *sig)
{
unsigned int signum;
if (lxc_safe_uint(sig, &signum) < 0)
return -1;
return signum;
}
static int rt_sig_num(const char *signame)
{
int rtmax = 0, sig_n = 0;
if (strncasecmp(signame, "max-", 4) == 0) {
rtmax = 1;
}
signame += 4;
if (!isdigit(*signame))
return -1;
sig_n = sig_num(signame);
sig_n = rtmax ? SIGRTMAX - sig_n : SIGRTMIN + sig_n;
if (sig_n > SIGRTMAX || sig_n < SIGRTMIN)
return -1;
return sig_n;
}
int sig_parse(const char *signame)
{
size_t n;
if (isdigit(*signame)) {
return sig_num(signame);
} else if (strncasecmp(signame, "sig", 3) == 0) {
signame += 3;
if (strncasecmp(signame, "rt", 2) == 0)
return rt_sig_num(signame + 2);
for (n = 0; n < sizeof(signames) / sizeof((signames)[0]); n++) {
if (strcasecmp(signames[n].name, signame) == 0)
return signames[n].num;
}
}
return -1;
}

1
src/lxc/confile_utils.h
View File

@ -92,5 +92,6 @@ extern int lxc_get_conf_uint64(struct lxc_conf *c, char *retv, int inlen, uint64
extern bool parse_limit_value(const char **value, rlim_t *res);
extern int lxc_inherit_namespace(const char *lxcname_or_pid,
const char *lxcpath, const char *namespace);
extern int sig_parse(const char *signame);
#endif /* __LXC_CONFILE_UTILS_H */