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fix kernel_log() and add error-checking (#24)

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execl requires a full path to the executable, and the arguments begin
with argv[0], not argv[1].
This commit is contained in:
Devin J. Pohly 2018-05-05 11:37:24 -05:00 committed by nullgemm
parent 841a951859
commit 2234757282
1 changed files with 11 additions and 4 deletions
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15
src/utils.c
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@ -20,22 +20,29 @@ void kernel_log(int mode)
pid_t pid;
int status;
pid = fork();
if(pid < 0) {
perror("fork");
exit(1);
}
if(pid == 0)
{
if(mode)
{
execl("dmesg", "-E", NULL);
execl("/bin/dmesg", "/bin/dmesg", "-E", NULL);
}
else
{
execl("dmesg", "-D", NULL);
execl("/bin/dmesg", "/bin/dmesg", "-D", NULL);
}
exit(0);
/* execl should not return */
perror("execl");
exit(1);
}
waitpid(pid, &status, 0);
if(!WIFEXITED(status) || WEXITSTATUS(status))
exit(1);
}
char* trim(char* s)