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Where if not in examples we should follow style(9)?
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bf64a6b6b4
commit
195ebc7e9e
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=193374
@ -42,7 +42,7 @@ static struct sysctl_oid *a_root, *a_root1, *b_root;
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static struct sysctl_ctx_list clist, clist1, clist2;
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static int
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sysctl_dyn_sysctl_test (SYSCTL_HANDLER_ARGS)
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sysctl_dyn_sysctl_test(SYSCTL_HANDLER_ARGS)
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{
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char *buf = "let's produce some text...";
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@ -53,7 +53,7 @@ sysctl_dyn_sysctl_test (SYSCTL_HANDLER_ARGS)
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* The function called at load/unload.
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*/
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static int
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load (module_t mod, int cmd, void *arg)
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load(module_t mod, int cmd, void *arg)
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{
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int error;
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@ -78,37 +78,37 @@ load (module_t mod, int cmd, void *arg)
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SYSCTL_STATIC_CHILDREN(/* top of sysctl tree */),
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OID_AUTO, "dyn_sysctl", CTLFLAG_RW, 0,
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"dyn_sysctl root node");
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if(a_root == NULL) {
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if (a_root == NULL) {
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printf("SYSCTL_ADD_NODE failed!\n");
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return (EINVAL);
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}
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SYSCTL_ADD_LONG(&clist, SYSCTL_CHILDREN(a_root),
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OID_AUTO, "long_a", CTLFLAG_RW, &a, "just to try");
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OID_AUTO, "long_a", CTLFLAG_RW, &a, "just to try");
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SYSCTL_ADD_INT(&clist, SYSCTL_CHILDREN(a_root),
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OID_AUTO, "int_b", CTLFLAG_RW, &b, 0, "just to try 1");
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a_root1=SYSCTL_ADD_NODE(&clist, SYSCTL_CHILDREN(a_root),
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OID_AUTO, "nextlevel", CTLFLAG_RD, 0, "one level down");
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OID_AUTO, "int_b", CTLFLAG_RW, &b, 0, "just to try 1");
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a_root1 = SYSCTL_ADD_NODE(&clist, SYSCTL_CHILDREN(a_root),
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OID_AUTO, "nextlevel", CTLFLAG_RD, 0, "one level down");
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SYSCTL_ADD_STRING(&clist, SYSCTL_CHILDREN(a_root1),
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OID_AUTO, "string_c", CTLFLAG_RD, c, 0, "just to try 2");
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OID_AUTO, "string_c", CTLFLAG_RD, c, 0, "just to try 2");
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printf("1. (%p) / dyn_sysctl\n", &clist);
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/* Add a subtree under already existing category */
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a_root1 = SYSCTL_ADD_NODE(&clist, SYSCTL_STATIC_CHILDREN(_kern),
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OID_AUTO, "dyn_sysctl", CTLFLAG_RW, 0, "dyn_sysctl root node");
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if(a_root1 == NULL) {
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OID_AUTO, "dyn_sysctl", CTLFLAG_RW, 0, "dyn_sysctl root node");
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if (a_root1 == NULL) {
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printf("SYSCTL_ADD_NODE failed!\n");
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return (EINVAL);
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}
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SYSCTL_ADD_PROC(&clist, SYSCTL_CHILDREN(a_root1),
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OID_AUTO, "procedure", CTLFLAG_RD, 0, 0,
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sysctl_dyn_sysctl_test, "A", "I can be here, too");
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OID_AUTO, "procedure", CTLFLAG_RD, 0, 0,
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sysctl_dyn_sysctl_test, "A", "I can be here, too");
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printf(" (%p) /kern dyn_sysctl\n", &clist);
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/* Overlap second tree with the first. */
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b_root = SYSCTL_ADD_NODE(&clist1, SYSCTL_CHILDREN(a_root),
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OID_AUTO, "nextlevel", CTLFLAG_RD, 0, "one level down");
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OID_AUTO, "nextlevel", CTLFLAG_RD, 0, "one level down");
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SYSCTL_ADD_STRING(&clist1, SYSCTL_CHILDREN(b_root),
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OID_AUTO, "string_c1", CTLFLAG_RD, c, 0, "just to try 2");
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OID_AUTO, "string_c1", CTLFLAG_RD, c, 0, "just to try 2");
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printf("2. (%p) / dyn_sysctl (overlapping #1)\n", &clist1);
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/*
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@ -117,19 +117,19 @@ load (module_t mod, int cmd, void *arg)
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* WARNING: this is an example of WRONG use of dynamic sysctls.
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*/
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b_root=SYSCTL_ADD_NODE(&clist2, SYSCTL_CHILDREN(a_root1),
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OID_AUTO, "bad", CTLFLAG_RW, 0, "dependent node");
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OID_AUTO, "bad", CTLFLAG_RW, 0, "dependent node");
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SYSCTL_ADD_STRING(&clist2, SYSCTL_CHILDREN(b_root),
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OID_AUTO, "string_c", CTLFLAG_RD, c, 0, "shouldn't panic");
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OID_AUTO, "string_c", CTLFLAG_RD, c, 0, "shouldn't panic");
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printf("3. (%p) /kern/dyn_sysctl bad (WRONG!)\n", &clist2);
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break;
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case MOD_UNLOAD :
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printf("1. Try to free ctx1 (%p): ", &clist);
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if(sysctl_ctx_free(&clist))
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if (sysctl_ctx_free(&clist) != 0)
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printf("failed: expected. Need to remove ctx3 first.\n");
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else
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printf("HELP! sysctl_ctx_free(%p) succeeded. EXPECT PANIC!!!\n", &clist);
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printf("2. Try to free ctx3 (%p): ", &clist2);
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if(sysctl_ctx_free(&clist2)) {
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if (sysctl_ctx_free(&clist2) != 0) {
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printf("sysctl_ctx_free(%p) failed!\n", &clist2);
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/* Remove subtree forcefully... */
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sysctl_remove_oid(b_root, 1, 1);
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@ -137,7 +137,7 @@ load (module_t mod, int cmd, void *arg)
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} else
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printf("Ok\n");
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printf("3. Try to free ctx1 (%p) again: ", &clist);
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if(sysctl_ctx_free(&clist)) {
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if (sysctl_ctx_free(&clist) != 0) {
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printf("sysctl_ctx_free(%p) failed!\n", &clist);
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/* Remove subtree forcefully... */
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sysctl_remove_oid(a_root1, 1, 1);
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@ -145,7 +145,7 @@ load (module_t mod, int cmd, void *arg)
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} else
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printf("Ok\n");
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printf("4. Try to free ctx2 (%p): ", &clist1);
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if(sysctl_ctx_free(&clist1)) {
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if (sysctl_ctx_free(&clist1) != 0) {
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printf("sysctl_ctx_free(%p) failed!\n", &clist1);
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/* Remove subtree forcefully... */
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sysctl_remove_oid(a_root, 1, 1);
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@ -156,10 +156,10 @@ load (module_t mod, int cmd, void *arg)
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error = EOPNOTSUPP;
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break;
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}
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return error;
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return (error);
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}
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static moduledata_t mod_data= {
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static moduledata_t mod_data = {
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"dyn_sysctl",
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load,
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0
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@ -26,7 +26,6 @@
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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/module.h>
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@ -38,18 +37,17 @@
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/*
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* The function for implementing the syscall.
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*/
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static int
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hello (struct thread *td, void *arg)
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hello(struct thread *td, void *arg)
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{
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printf ("hello kernel\n");
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return 0;
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printf("hello kernel\n");
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return (0);
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}
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/*
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* The `sysent' for the new syscall
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*/
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static struct sysent hello_sysent = {
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0, /* sy_narg */
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hello /* sy_call */
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@ -58,30 +56,28 @@ static struct sysent hello_sysent = {
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/*
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* The offset in sysent where the syscall is allocated.
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*/
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static int offset = NO_SYSCALL;
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/*
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* The function called at load/unload.
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*/
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static int
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load (struct module *module, int cmd, void *arg)
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load(struct module *module, int cmd, void *arg)
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{
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int error = 0;
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switch (cmd) {
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case MOD_LOAD :
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printf ("syscall loaded at %d\n", offset);
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printf("syscall loaded at %d\n", offset);
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break;
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case MOD_UNLOAD :
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printf ("syscall unloaded from %d\n", offset);
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printf("syscall unloaded from %d\n", offset);
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break;
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default :
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error = EOPNOTSUPP;
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break;
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}
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return error;
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return (error);
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}
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SYSCALL_MODULE(syscall, &offset, &hello_sysent, load, NULL);
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