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tools: acrn-crashlog: fix potential issues under common and usercrash

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This patch is to fix buffer overflow, return value not unified and
variable type not matched issues. And add some judge logic to improve
code quality.

Changes:
1. Handle the fd properly in the failing case.
2. Fix buffer overflow issues and null pointer access issues.
3. Fix the format issue in log_sys.c.
4. Remove the useless branch and adjust the function logic.
5. Add some checks for the string length before using strcpy/strcat/memcpy.
6. Fix strncpy null-terminated issues.
7. Change the return value to unify the return type.

Signed-off-by: CHEN Gang <gang.c.chen@intel.com>
Signed-off-by: xiaojin2 <xiaojing.liu@intel.com>
Reviewed-by: Zhi Jin <zhi.jin@intel.com>
Reviewed-by: Liu Xinwu <xinwu.liu@intel.com>
Acked-by: Zhang Di <di.zhang@intel.com>
This commit is contained in:
xiaojin2
2018-06-08 12:47:59 +08:00
committed by lijinxia
parent 48067b1cab
commit cb39badf82
10 changed files with 111 additions and 80 deletions
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5
tools/acrn-crashlog/usercrash/debugger.c
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@@ -19,10 +19,9 @@
*/
static void print_usage(void)
{
printf("debugger - tool to dump process info of a running process. ");
printf("debugger - tool to dump process info of a running process.\n");
printf("[Usage]\n");
printf("\t--shell cmd, debugger <pid> (root role to run)\n");
printf("(root role to run)\n");
printf("[Option]\n");
printf("\t-h: print this usage message\n");
printf("\t-v: print debugger version\n");
@@ -48,7 +47,7 @@ int main(int argc, char *argv[])
print_usage();
if (getuid() != 0) {
LOGE("failed to execute debugger, root is required\n");
printf("failed to execute debugger, root is required\n");
exit(EXIT_FAILURE);
}