我执行AIX内核扩展程序时出错
我是AIX的新人。 编译内核扩展时遇到了很多错误。 在那之后，最后我编译并链接。
但是当我执行二进制文件时，我收到了这个错误。
bash# ./sysconfig_1 load ./question.exp Could not load program ./sysconfig_1: The program does not have an entry point or the o_snentry field in the auxiliary haeder is invalid. Examine file headers with the 'dump -ohv' command 谁能帮助我？
//sysconfig_1.c #include #include #include #include main(int argc, char *argv[]) { struct cfg_load cl; struct cfg_kmod ck; int rc; int act = -1; if (argc == 3) { if ((strcmp(argv[1], "load")) == 0) act = SYS_KLOAD; else if (strcmp(argv[1], "unload") == 0) act = SYS_KULOAD; } if (act == -1) { printf("usage: %s load|unload \n, argv[0]"); exit(1); } cl.path =argv[2]; cl.libpath = NULL; if (act == SYS_KLOAD) { /* Load Kernel Module */ rc = sysconfig(SYS_KLOAD, &cl, sizeof(struct cfg_load)); if (rc == CONF_SUCC) printf("kload returns %d, kmid = %x\n", rc, cl.kmid); else printf("kload returns %d, errno = %d\n", rc); //, errno); if ((rc == CONF_SUCC) && (cl.kmid != 0)) { /* * Invoke entry point (kmod) or config routine (dd) * for kernel extension with CFG_INIT parameter. */ ck.kmid = cl.kmid; ck.cmd = CFG_INIT; rc = sysconfig(SYS_CFGKMOD, &ck, sizeof(struct cfg_kmod)); if (rc == CONF_SUCC) printf("cfgkmod returns %d, kmid = %x\n", rc, cl.kmid); else printf("cfgkmod returns %d, errno = %d\n", rc); // , errno); } } else { /* Query to determine if kernel module is loaded. */ rc = sysconfig(SYS_QUERYLOAD, &cl, sizeof(struct cfg_load)); if (rc == CONF_SUCC) printf("queryload returns %d, kmid = %x\n", rc, cl.kmid); else printf("queryload returns %d, errno = %x\n", rc); // , errno); if ((rc == 0) && (cl.kmid != 0)) { /* * Invoke entry point (kmod) or config routine (dd) * for kernel extension with CGW_TERM parameter. */ ck.kmid = cl.kmid; ck.cmd = CFG_TERM; ck.mdiptr = 0; ck.mdilen = 0; rc = sysconfig(SYS_CFGKMOD, &ck, sizeof(struct cfg_kmod)); if (rc == CONF_SUCC) printf("cfgkmod returns %d, kmid =%x\n", rc, cl.kmid); else { printf("cfgkmod returns %d, errno =%d\n, rc); //, errno"); exit(rc); } /* Unconfigure kernel module. */ rc = sysconfig(SYS_KULOAD, &cl, sizeof(struct cfg_load)); if (rc == CONF_SUCC) printf("unload returns %d, kmid =%x\n", rc, cl.kmid); else printf("unload returns %d, errno =%d\n", rc); // , errno); } } exit(rc); } //question.c #include #include question_init(int cmd, struct uio *uio) { switch(cmd) { case CFG_INIT: { printf("question_init: command=CFW_INIT \n"); break; } case CFG_TERM: { printf("question_init:command=CFG_TERM \n"); break; } default: printf("question_init:command=%d\n", cmd); } return 0; } question() { return 42; }
我这样编译。 我误解了什么？
bash# gcc -D_KERNEL -Wall -g -pipe -maix64 -ffreestanding -msoft-float -c sysconfig_1.c bash# gcc -D_KERNEL -Wall -g -pipe -maix64 -ffreestanding -msoft-float -c question.c bash# /usr/bin/ld -o sysconfig_1 -b64 -K -bI:/usr/lib/kernex.exp -lsys -lcsys -lc_r sysconfig_1.o
您的程序不适合在独立环境中运行，因此我认为这是引起问题的-ffreestanding选择。 mainfunction显然被认为是普通function，而不是切入点。