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dmesg

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This commit is contained in:
Your Name 2023-11-05 21:42:26 +03:00
parent e7e0439e3a
commit 076ec8f540
5 changed files with 77 additions and 7 deletions
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12
builder/builder.c
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@ -33,6 +33,7 @@ char *MakePath(const char *src, const char *output_dir) {
void Compile(const char *src, const char *output_dir) {
char *path = MakePath(src, output_dir);
printf("[CC] Building %s -> %s\n", src, path);
size_t len = strlen(CC) + strlen(CFLAGS) + strlen(src) + strlen(path) + 7;
char *arg = malloc(len + 1);
@ -50,21 +51,20 @@ void Compile(const char *src, const char *output_dir) {
}
void ListAndCompile(const char *dir, const char *output_dir) {
chdir(dir);
DIR *dp = opendir(".");
if (dp == NULL) {
fprintf(stderr, "builder: %s\n", strerror(errno));
printf("[CHDIR] %s\n", dir);
if (chdir(dir) < 0) {
fprintf(stderr, "builder: %s: %s\n", dir, strerror(errno));
exit(1);
}
DIR *dp = opendir(".");
struct dirent *ep;
while ((ep = readdir(dp)) != NULL) {
if (!strcmp(ep->d_name, ".") || !strcmp(ep->d_name, ".."))
continue;
printf("[INFO] Building %s\n", ep->d_name);
Compile(ep->d_name, output_dir);
}
closedir(dp);

4
builder/config.h
View File

@ -4,6 +4,8 @@
const char *objects[] = {
"console-tools",
"coreutils",
"loginutils",
"sysutils",
"networking",
"procps",
"shell"
@ -14,5 +16,5 @@ const char *libs[] = {
};
#define CFLAGS "-Wall -Wextra -pedantic -Os -s -I ../libmu"
#define CC "tcc"
#define CC "cc"
#endif

3
coreutils/cmp.c
View File

@ -77,12 +77,15 @@ int main(const int argc, const char **argv) {
switch (argc - i) {
case 4:
skip2 = parse_int(argv[i + 3]);
/* fallthrough */
case 3:
skip1 = parse_int(argv[i + 2]);
/* fallthrough */
case 2:
fp2 = file_open(argv[i + 1]);
/* fallthrough */
case 1:
fp1 = file_open(argv[i]);

0
obj/.gitignore vendored
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65
sysutils/dmesg.c Normal file
View File

@ -0,0 +1,65 @@
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/klog.h>
#define BUF_SIZE 8196
int main(const int argc, const char **argv) {
unsigned int s_size = 0;
unsigned int n_level = 0;
int i;
for (i = 1; i < argc; i++) {
if (argv[i][0] != '-')
break;
else if (!strncmp(argv[i], "-s=", 3))
s_size = atoi(argv[i] + 3);
else if (!strncmp(argv[i], "-n=", 3))
n_level = atoi(argv[i] + 3);
else if (!strcmp(argv[i], "--help")) {
printf("dmesg [-n=L Set console logging level] [-s=S Buffer Size]\n");
return 0;
}
}
/* Setup */
if (n_level)
if (klogctl(8, NULL, (long)n_level) < 0) {
fprintf(stderr, "dmesg: %s\n", strerror(errno));
return 1;
}
if (!s_size)
s_size = klogctl(10, NULL, 0);
/* Get kernel log */
char *buf = malloc(s_size + 1);
if (buf == NULL) {
fprintf(stderr, "dmesg: malloc failed\n");
return 1;
}
int n = klogctl(3, buf, s_size);
if (n <= 0) {
free(buf);
if (n == 0)
return 0;
fprintf(stderr, "dmesg: %s\n", strerror(errno));
return 1;
}
/* Print */
write(STDOUT_FILENO, buf, n);
putchar('\n');
free(buf);
return 0;
}