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138 lines
4.3 KiB
138 lines
4.3 KiB
# --- T2-COPYRIGHT-NOTE-BEGIN --- |
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# This copyright note is auto-generated by ./scripts/Create-CopyPatch. |
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# |
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# T2 SDE: package/.../ipvsadm2/ipvsadm-1.24.backwards_compat.patch |
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# Copyright (C) 2004 - 2006 The T2 SDE Project |
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# |
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# More information can be found in the files COPYING and README. |
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# |
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# This patch file is dual-licensed. It is available under the license the |
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# patched project is licensed under, as long as it is an OpenSource license |
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# as defined at http://www.opensource.org/ (e.g. BSD, X11) or under the terms |
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# of the GNU General Public License as published by the Free Software |
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# Foundation; either version 2 of the License, or (at your option) any later |
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# version. |
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# --- T2-COPYRIGHT-NOTE-END --- |
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http://www.in-addr.de/pipermail/lvs-users/2005-January/013076.html |
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Horms <[email protected]> |
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BACKWARDS_COMPET_DEFINE= let you use ipvsadm on lx2.4 and lx2.6 |
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NOTE: original patch exec `ipvsadm-1.21` but i choosed `ipvsadm.old` |
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Alejandro |
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diff -ruN ipvsadm-1.24/Makefile ipvsadm-1.24.backwards_compat/Makefile |
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--- ipvsadm-1.24/Makefile 2004-10-28 00:53:07.000000000 +0900 |
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+++ ipvsadm-1.24.backwards_compat/Makefile 2005-01-27 13:24:45.000000000 +0900 |
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@@ -74,10 +75,15 @@ |
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POPT_DEFINE = -DHAVE_POPT |
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endif |
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+# If defined then if the version of ipvs in the kernel is too old |
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+# for ipvsadm 1.24, then instead of trying to execute ipvsadm.1.21, |
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+# print a warning and soldier on |
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+BACKWARDS_COMPET_DEFINE= -DNO_BACKWARDS_COMPAT |
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+ |
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OBJS = ipvsadm.o config_stream.o dynamic_array.o |
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LIBS = $(POPT_LIB) |
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DEFINES = -DVERSION=\"$(VERSION)\" -DSCHEDULERS=\"$(SCHEDULERS)\" \ |
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- $(POPT_DEFINE) |
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+ $(POPT_DEFINE) $(BACKWARDS_COMPET_DEFINE) |
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DEFINES += $(shell if [ ! -f ../ip_vs.h ]; then \ |
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echo "-DHAVE_NET_IP_VS_H"; fi;) |
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diff -ruN ipvsadm-1.24/ipvsadm.c ipvsadm-1.24.backwards_compat/ipvsadm.c |
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--- ipvsadm-1.24/ipvsadm.c 2004-01-10 18:39:03.000000000 +0900 |
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+++ ipvsadm-1.24.backwards_compat/ipvsadm.c 2005-01-27 13:32:46.000000000 +0900 |
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@@ -54,6 +54,7 @@ |
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* processing options. |
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* Alexandre Cassen : added ipvs_syncd SyncdID support to filter |
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* incoming sync messages. |
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+ * Horms : Added backwards compatibility code |
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* |
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* |
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* ippfvsadm - Port Fowarding & Virtual Server ADMinistration program |
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@@ -301,9 +302,11 @@ |
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static void list_daemon(void); |
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static int modprobe_ipvs(void); |
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-static void check_ipvs_version(void); |
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+static void check_ipvs_version(char **argv); |
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static int process_options(int argc, char **argv, int reading_stdin); |
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+static void exec_old(char **argv); |
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+ |
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int main(int argc, char **argv) |
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{ |
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@@ -319,7 +322,7 @@ |
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} |
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/* warn the user if the IPVS version is out of date */ |
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- check_ipvs_version(); |
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+ check_ipvs_version(argv); |
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/* list the table if there is no other arguement */ |
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if (argc == 1){ |
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@@ -1393,13 +1396,14 @@ |
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} |
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-static void check_ipvs_version(void) |
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+static void check_ipvs_version(char *argv[]) |
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{ |
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/* verify the IPVS version */ |
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if (ipvs_info.version < |
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IPVS_VERSION(MINIMUM_IPVS_VERSION_MAJOR, |
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MINIMUM_IPVS_VERSION_MINOR, |
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MINIMUM_IPVS_VERSION_PATCH)) { |
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+ exec_old(argv); |
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fprintf(stderr, |
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"Warning: IPVS version missmatch: \n" |
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" Kernel compiled with IPVS version %d.%d.%d\n" |
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@@ -1896,3 +1900,46 @@ |
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return (offset<top)?0:1; |
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} |
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+ |
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+ |
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+/* Simple backwards compat code to exec old version */ |
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+/* Based on code form module-init-tools 3.1 */ |
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+ |
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+#ifndef NO_BACKWARDS_COMPAT |
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+ |
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+static void exec_old(char **argv) |
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+{ |
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+ char *sep; |
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+ pid_t pid; |
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+ char ascii_pid[32]; |
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+ char pathname[strlen(argv[0])+1]; |
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+ char oldname[strlen(argv[0])+strlen("ipvsadm.old")+1]; |
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+ |
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+ memset(pathname, 0, strlen(argv[0])+1); |
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+ sep = strrchr(argv[0], '/'); |
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+ if (sep) |
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+ memcpy(pathname, argv[0], sep - argv[0]+1); |
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+ sprintf(oldname, "%sipvsadm.old", pathname); |
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+ |
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+ /* Use an environment variable for recursion detection */ |
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+ pid = getpid(); |
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+ snprintf(ascii_pid, sizeof(ascii_pid), "%lu", (unsigned long)pid); |
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+ if (strcmp(getenv("IPVSADM_RECURSE") ?: "", ascii_pid) == 0) { |
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+ fprintf(stderr, "WARNING: %s: I am not the old version!\n", |
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+ oldname); |
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+ return; |
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+ } |
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+ setenv("IPVSADM_RECURSE", ascii_pid, 1); |
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+ |
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+ execvp(oldname, argv); |
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+ fprintf(stderr, |
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+ "Kernel requires old ipvsadm, but couldn't run %s: %s\n", |
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+ oldname, strerror(errno)); |
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+ exit(2); |
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+} |
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+ |
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+#else /* NO_BACKWARDS_COMPAT */ |
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+static void exec_old(char **argv) |
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+{ |
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+} |
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+#endif /* !NO_BACKWARDS_COMPAT */
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