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ifupdown: fix for standalone shell; removed hardcoded PATH

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This commit is contained in:
Denis Vlasenko 2006-09-27 14:14:51 +00:00
parent 0534125ccc
commit 2f4399c6cc
1 changed files with 23 additions and 41 deletions
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64
networking/ifupdown.c
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@ -106,6 +106,8 @@ enum {
static char **__myenviron;
static char *startup_PATH;
#if ENABLE_FEATURE_IFUPDOWN_IPV4 || ENABLE_FEATURE_IFUPDOWN_IPV6
#ifdef CONFIG_FEATURE_IFUPDOWN_IP
@ -448,50 +450,29 @@ static int static_down(struct interface_defn_t *ifd, execfn *exec)
return ((result == 2) ? 2 : 0);
}
static int execable(char *program)
{
struct stat buf;
if (0 == stat(program, &buf)) {
if (S_ISREG(buf.st_mode) && (S_IXUSR & buf.st_mode)) {
return(1);
}
}
return(0);
}
static int dhcp_up(struct interface_defn_t *ifd, execfn *exec)
{
if (execable("/sbin/udhcpc")) {
return( execute("udhcpc -n -p /var/run/udhcpc.%iface%.pid -i "
"%iface% [[-H %hostname%]] [[-c %clientid%]]", ifd, exec));
} else if (execable("/sbin/pump")) {
return( execute("pump -i %iface% [[-h %hostname%]] [[-l %leasehours%]]", ifd, exec));
} else if (execable("/sbin/dhclient")) {
return( execute("dhclient -pf /var/run/dhclient.%iface%.pid %iface%", ifd, exec));
} else if (execable("/sbin/dhcpcd")) {
return( execute("dhcpcd [[-h %hostname%]] [[-i %vendor%]] [[-I %clientid%]] "
"[[-l %leasetime%]] %iface%", ifd, exec));
}
return(0);
if (execute("udhcpc -n -p /var/run/udhcpc.%iface%.pid -i "
"%iface% [[-H %hostname%]] [[-c %clientid%]]", ifd, exec)) return 1;
if (execute("pump -i %iface% [[-h %hostname%]] [[-l %leasehours%]]", ifd, exec)) return 1;
if (execute("dhclient -pf /var/run/dhclient.%iface%.pid %iface%", ifd, exec)) return 1;
if (execute("dhcpcd [[-h %hostname%]] [[-i %vendor%]] [[-I %clientid%]] "
"[[-l %leasetime%]] %iface%", ifd, exec)) return 1;
return 0;
}
static int dhcp_down(struct interface_defn_t *ifd, execfn *exec)
{
int result = 0;
if (execable("/sbin/udhcpc")) {
/* SIGUSR2 forces udhcpc to release the current lease and go inactive,
* and SIGTERM causes udhcpc to exit. Signals are queued and processed
* sequentially so we don't need to sleep */
result = execute("kill -USR2 `cat /var/run/udhcpc.%iface%.pid` 2>/dev/null", ifd, exec);
result += execute("kill -TERM `cat /var/run/udhcpc.%iface%.pid` 2>/dev/null", ifd, exec);
} else if (execable("/sbin/pump")) {
result = execute("pump -i %iface% -k", ifd, exec);
} else if (execable("/sbin/dhclient")) {
result = execute("kill -9 `cat /var/run/dhclient.%iface%.pid` 2>/dev/null", ifd, exec);
} else if (execable("/sbin/dhcpcd")) {
result = execute("dhcpcd -k %iface%", ifd, exec);
}
return (result || static_down(ifd, exec));
/* SIGUSR2 forces udhcpc to release the current lease and go inactive,
* and SIGTERM causes udhcpc to exit. Signals are queued and processed
* sequentially so we don't need to sleep */
if (execute("kill -USR2 `cat /var/run/udhcpc.%iface%.pid` 2>/dev/null", ifd, exec)
|| execute("kill -TERM `cat /var/run/udhcpc.%iface%.pid` 2>/dev/null", ifd, exec))
return 1;
if (execute("pump -i %iface% -k", ifd, exec)) return 1;
if (execute("kill -9 `cat /var/run/dhclient.%iface%.pid` 2>/dev/null", ifd, exec)) return 1;
if (execute("dhcpcd -k %iface%", ifd, exec)) return 1;
return static_down(ifd, exec);
}
static int bootp_up(struct interface_defn_t *ifd, execfn *exec)
@ -875,9 +856,7 @@ static void set_environ(struct interface_defn_t *iface, const char *mode)
*(environend++) = setlocalenv("%s=%s", "ADDRFAM", iface->address_family->name);
*(environend++) = setlocalenv("%s=%s", "METHOD", iface->method->name);
*(environend++) = setlocalenv("%s=%s", "MODE", mode);
/* FIXME: we must not impose our own PATH, it is admin's job!
Use PATH from parent env */
*(environend++) = setlocalenv("%s=%s", "PATH", "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin");
*(environend++) = setlocalenv("%s=%s", "PATH", startup_PATH);
}
static int doit(char *str)
@ -1103,6 +1082,9 @@ int ifupdown_main(int argc, char **argv)
exit(EXIT_FAILURE);
}
startup_PATH = getenv("PATH");
if (!startup_PATH) startup_PATH = "";
/* Create a list of interfaces to work on */
if (DO_ALL) {
if (cmds == iface_up) {