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dhcpcd: Add hooks

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This commit is contained in:
Sebastian Huber
2018-05-02 09:01:32 +02:00
parent 8bd38d645c
commit b2eb48c23b
7 changed files with 118 additions and 6 deletions
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52
dhcpcd/script.c
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@@ -51,7 +51,30 @@
#include "ipv6nd.h"
#include "net.h"
#include "script.h"
#ifdef __rtems__
#include <rtems/dhcpcd.h>
static SLIST_HEAD(, rtems_dhcpcd_hook) dhcpcd_hooks =
SLIST_HEAD_INITIALIZER(dhcpcd_hooks);
void
rtems_dhcpcd_add_hook(rtems_dhcpcd_hook *hook)
{
rtems_recursive_mutex_lock(&dhcpcd_mutex);
SLIST_INSERT_HEAD(&dhcpcd_hooks, hook, node);
rtems_recursive_mutex_unlock(&dhcpcd_mutex);
}
void
rtems_dhcpcd_remove_hook(rtems_dhcpcd_hook *hook)
{
rtems_recursive_mutex_lock(&dhcpcd_mutex);
SLIST_REMOVE(&dhcpcd_hooks, hook, rtems_dhcpcd_hook, node);
rtems_recursive_mutex_unlock(&dhcpcd_mutex);
}
#endif /* __rtems__ */
#ifndef __rtems__
#define DEFAULT_PATH "PATH=/usr/bin:/usr/sbin:/bin:/sbin"
static const char * const if_params[] = {
@@ -104,6 +127,7 @@ exec_script(char *const *argv, char *const *env)
}
return pid;
}
#endif /* __rtems__ */
#ifdef INET
static char *
@@ -168,6 +192,7 @@ append_config(char ***env, ssize_t *len,
}
#endif
#ifndef __rtems__
static size_t
arraytostr(const char *const *argv, char **s)
{
@@ -191,6 +216,7 @@ arraytostr(const char *const *argv, char **s)
}
return len;
}
#endif /* __rtems__ */
static ssize_t
make_env(const struct interface *ifp, const char *reason, char ***argv)
@@ -435,6 +461,7 @@ eexit:
return -1;
}
#ifndef __rtems__
static int
send_interface1(int fd, const struct interface *iface, const char *reason)
{
@@ -507,29 +534,43 @@ send_interface(int fd, const struct interface *iface)
}
return retval;
}
#endif /* __rtems__ */
int
script_runreason(const struct interface *ifp, const char *reason)
{
#ifndef __rtems__
char *const argv[2] = { UNCONST(ifp->options->script), NULL };
#endif /* __rtems__ */
char **env = NULL, **ep;
#ifndef __rtems__
char *path, *bigenv;
ssize_t e, elen = 0;
pid_t pid;
#else /* __rtems__ */
ssize_t elen;
rtems_dhcpcd_hook *hook;
rtems_dhcpcd_hook *hook2;
#endif /* __rtems__ */
int status = 0;
#ifndef __rtems__
const struct fd_list *fd;
struct iovec iov[2];
#endif /* __rtems__ */
if (ifp->options->script == NULL ||
ifp->options->script[0] == '\0' ||
strcmp(ifp->options->script, "/dev/null") == 0)
return 0;
#ifndef __rtems__
syslog(LOG_DEBUG, "%s: executing `%s' %s",
ifp->name, argv[0], reason);
#endif /* __rtems__ */
/* Make our env */
elen = make_env(ifp, reason, &env);
#ifndef __rtems__
ep = realloc(env, sizeof(char *) * (elen + 2));
if (ep == NULL) {
elen = -1;
@@ -596,6 +637,17 @@ script_runreason(const struct interface *ifp, const char *reason)
free(bigenv);
out:
#else /* __rtems__ */
rtems_recursive_mutex_lock(&dhcpcd_mutex);
SLIST_FOREACH_SAFE(hook, &dhcpcd_hooks, node, hook2) {
syslog(LOG_DEBUG, "%s: executing `%s' %s", ifp->name,
hook->name, reason);
(*hook->handler)(hook, env);
}
rtems_recursive_mutex_unlock(&dhcpcd_mutex);
#endif /* __rtems__ */
/* Cleanup */
ep = env;
while (*ep)