diff options
| -rw-r--r-- | networking/ifupdown.c | 64 |
1 files changed, 23 insertions, 41 deletions
diff --git a/networking/ifupdown.c b/networking/ifupdown.c index 9841b59..99b1c59 100644 --- a/networking/ifupdown.c +++ b/networking/ifupdown.c @@ -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) { |