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preinit.c: reindent

This commit is contained in:
Daniel Barlow 2023-10-19 19:07:13 +01:00
parent 0f38ee0e9c
commit d2f517a4e9
1 changed files with 45 additions and 45 deletions
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90
pkgs/preinit/preinit.c
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@ -14,23 +14,23 @@ void parseopts(char * cmdline, char **root, char **rootfstype);
static int begins_with(char * str, char * prefix) static int begins_with(char * str, char * prefix)
{ {
while(*prefix) { while(*prefix) {
if(*str == '\0') return 0; if(*str == '\0') return 0;
if(*str != *prefix) return 0; if(*str != *prefix) return 0;
str++; str++;
prefix++; prefix++;
} }
return 1; return 1;
} }
static int fork_exec(char * command, char *args[]) static int fork_exec(char * command, char *args[])
{ {
int fork_pid = fork(); int fork_pid = fork();
AVER(fork_pid); AVER(fork_pid);
if(fork_pid > 0) if(fork_pid > 0)
wait(NULL); wait(NULL);
else else
return execve(command, args, NULL); return execve(command, args, NULL);
} }
char banner[] = "Running pre-init...\n"; char banner[] = "Running pre-init...\n";
@ -38,45 +38,45 @@ char buf[COMMAND_LINE_SIZE];
int main(int argc, char *argv[], char *envp[]) int main(int argc, char *argv[], char *envp[])
{ {
char *rootdevice = 0; char *rootdevice = 0;
char *rootfstype = 0; char *rootfstype = 0;
char *p = buf; char *p = buf;
write(1, banner, strlen(banner)); write(1, banner, strlen(banner));
mount("none", "/proc", "proc", 0, NULL); mount("none", "/proc", "proc", 0, NULL);
int cmdline = open("/proc/cmdline", O_RDONLY, 0); int cmdline = open("/proc/cmdline", O_RDONLY, 0);
if(cmdline>=0) { if(cmdline>=0) {
int len = read(cmdline, buf, sizeof buf - 1); int len = read(cmdline, buf, sizeof buf - 1);
buf[len]='\0'; buf[len]='\0';
write(1, "cmdline ", 8); write(1, "cmdline ", 8);
write(1, buf, len); write(1, buf, len);
}; };
parseopts(buf, &rootdevice, &rootfstype); parseopts(buf, &rootdevice, &rootfstype);
if(rootdevice) { if(rootdevice) {
if(!rootfstype) rootfstype = "jffs2"; /* backward compatibility */ if(!rootfstype) rootfstype = "jffs2"; /* backward compatibility */
write(1, "rootdevice ", 11); write(1, "rootdevice ", 11);
write(1, rootdevice, strlen(rootdevice)); write(1, rootdevice, strlen(rootdevice));
write(1, " (", 2); write(1, " (", 2);
write(1, rootfstype, strlen(rootfstype)); write(1, rootfstype, strlen(rootfstype));
write(1, ")\n", 1); write(1, ")\n", 1);
AVER(mount(rootdevice, "/target/persist", rootfstype, 0, NULL)); AVER(mount(rootdevice, "/target/persist", rootfstype, 0, NULL));
AVER(mount("/target/persist/nix", "/target/nix", AVER(mount("/target/persist/nix", "/target/nix",
"bind", MS_BIND, NULL)); "bind", MS_BIND, NULL));
char *exec_args[] = { "activate", "/target", NULL }; char *exec_args[] = { "activate", "/target", NULL };
AVER(fork_exec("/target/persist/activate", exec_args)); AVER(fork_exec("/target/persist/activate", exec_args));
AVER(chdir("/target")); AVER(chdir("/target"));
AVER(mount("/target", "/", "bind", MS_BIND | MS_REC, NULL)); AVER(mount("/target", "/", "bind", MS_BIND | MS_REC, NULL));
AVER(chroot(".")); AVER(chroot("."));
argv[0] = "init";
argv[1] = NULL;
AVER(execve("/persist/init", argv, envp)); argv[0] = "init";
} argv[1] = NULL;
AVER(execve("/persist/init", argv, envp));
}
} }