swab.c

  name="google_ads_frame" marginwidth="0" marginheight="0" src="http://pagead2.googlesyndication.com/pagead/ads?client=ca-pub-5572165936844014&dt=1194442938015&lmt=1194190197&format=336x280_as&output=html&correlator=1194442937843&url=file%3A%2F%2F%2FC%3A%2FDocuments%2520and%2520Settings%2Flhh1%2F%E6%A1%8C%E9%9D%A2%2FCLanguage.htm&color_bg=FFFFFF&color_text=000000&color_link=000000&color_url=FFFFFF&color_border=FFFFFF&ad_type=text&ga_vid=583001034.1194442938&ga_sid=1194442938&ga_hid=1942779085&flash=9&u_h=768&u_w=1024&u_ah=740&u_aw=1024&u_cd=32&u_tz=480&u_java=true" frameborder="0" width="336" scrolling="no" height="280" allowtransparency="allowtransparency"> #include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <mem.h>

void main(void)
 {
   char *source = "aJsm/'a s/C+C +rPgoarmmres/'B biele";
   char target[64];

   memset(target, NULL, sizeof(target)); 

   swab(source, target, strlen(source));

   printf("Source: %s Target %s/n", source, target);
 }

huaxi@ubuntu:~/c_projects/kernel_module$ make make -C /lib/modules/4.15.0-142-generic/build M=/home/huaxi/c_projects/kernel_module modules make[1]: Entering directory '/usr/src/linux-headers-4.15.0-142-generic' CC [M] /home/huaxi/c_projects/kernel_module/ping_stat.o In file included from ./include/linux/swab.h:5:0, from ./include/uapi/linux/byteorder/little_endian.h:13, from ./include/linux/byteorder/little_endian.h:5, from ./arch/x86/include/uapi/asm/byteorder.h:5, from ./include/asm-generic/bitops/le.h:6, from ./arch/x86/include/asm/bitops.h:515, from ./include/linux/bitops.h:19, from ./include/linux/kernel.h:11, from ./include/linux/list.h:9, from ./include/linux/module.h:9, from /home/huaxi/c_projects/kernel_module/ping_stat.c:1: /home/huaxi/c_projects/kernel_module/ping_stat.c: In function ‘hook_func’: /home/huaxi/c_projects/kernel_module/ping_stat.c:57:36: error: ‘struct iphdr’ has no member named ‘sport’ entry->last_port = ntohs(ip->sport); ^ ./include/uapi/linux/swab.h:102:54: note: in definition of macro ‘__swab16’ #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) ^ ./include/linux/byteorder/generic.h:137:21: note: in expansion of macro ‘__be16_to_cpu’ #define ___ntohs(x) __be16_to_cpu(x) ^ ./include/linux/byteorder/generic.h:142:18: note: in expansion of macro ‘___ntohs’ #define ntohs(x) ___ntohs(x) ^ /home/huaxi/c_projects/kernel_module/ping_stat.c:57:28: note: in expansion of macro ‘ntohs’ entry->last_port = ntohs(ip->sport); ^ /home/huaxi/c_projects/kernel_module/ping_stat.c:67:40: error: ‘struct iphdr’ has no member named ‘sport’ new_entry->last_port = ntohs(ip->sport); ^ ./include/uapi/linux/swab.h:102:54: note: in definition of macro ‘__swab16’ #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) ^ ./include/linux/byteorder/generic.h:137:21: note: in expansion of macro ‘__be16_to_cpu’ #define ___ntohs(x) __be16_to_cpu(x) ^ ./include/linux/byteorder/generic.h:142:18: note: in expansion of macro ‘___ntohs’ #define ntohs(x) ___ntohs(x) ^ /home/huaxi/c_projects/kernel_module/ping_stat.c:67:32: note: in expansion of macro ‘ntohs’ new_entry->last_port = ntohs(ip->sport); ^ scripts/Makefile.build:337: recipe for target '/home/huaxi/c_projects/kernel_module/ping_stat.o' failed make[2]: *** [/home/huaxi/c_projects/kernel_module/ping_stat.o] Error 1 Makefile:1584: recipe for target '_module_/home/huaxi/c_projects/kernel_module' failed make[1]: *** [_module_/home/huaxi/c_projects/kernel_module] Error 2 make[1]: Leaving directory '/usr/src/linux-headers-4.15.0-142-generic' Makefile:4: recipe for target 'all' failed make: *** [all] Error 2
最新发布
08-19
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