Squash commits for public release

2025-02-12 09:54:05 -05:00
commit 7118adc514
1108 changed files with 80873 additions and 0 deletions
--- a/libs/libc/posix/tasking.c
+++ b/libs/libc/posix/tasking.c
@@ -0,0 +1,133 @@
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysdep.h>
+#include <time.h>
+#include <unistd.h>
+
+int fork()
+{
+    int res = DO_SYSCALL_0(SYS_FORK);
+    RETURN_WITH_ERRNO(res, res, -1);
+}
+
+int execve(const char* path, char* const argv[], char* const envp[])
+{
+    int res = DO_SYSCALL_3(SYS_EXECVE, path, argv, envp);
+    RETURN_WITH_ERRNO(res, -1, -1);
+}
+
+int execvpe(const char* path, char* const argv[], char* const envp[])
+{
+    if (strchr(path, '/')) {
+        return execve(path, argv, envp);
+    }
+
+    char* full_path = malloc(256);
+    size_t namelen = strlen(path);
+    char* env_path = getenv("PATH");
+    if (!env_path) {
+        // Get it from confstr
+        env_path = "/bin:/usr/bin";
+    }
+
+    int len = 0;
+    int cnt = 0;
+    for (int i = 0; env_path[i]; i += len) {
+        len = 0;
+        while (env_path[i + len] && env_path[i + len] != ':') {
+            len++;
+        }
+
+        memcpy(full_path, &env_path[i], len);
+        full_path[len] = '/';
+        memcpy(&full_path[len + 1], path, namelen + 1);
+
+        int err = execve(full_path, argv, envp);
+        if (env_path[i + len] == ':') {
+            len++;
+        }
+    }
+
+    free(full_path);
+    return -ENOENT;
+}
+
+int execvp(const char* path, char* const argv[])
+{
+    return execvpe(path, argv, environ);
+}
+
+int execlp(const char* path, const char* arg0, ...)
+{
+    const char* args[16];
+    int nxt = 0;
+    args[nxt++] = arg0;
+
+    va_list va;
+    va_start(va, arg0);
+    for (;;) {
+        const char* arg = va_arg(va, const char*);
+        if (!arg) {
+            break;
+        }
+        args[nxt++] = arg;
+    }
+    va_end(va);
+    args[nxt++] = NULL;
+    return execvpe(path, (char* const*)args, environ);
+}
+
+int wait(int pid)
+{
+    int res = DO_SYSCALL_3(SYS_WAITPID, pid, NULL, 0);
+    RETURN_WITH_ERRNO(res, pid, -1);
+}
+
+int waitpid(int pid, int* status, int options)
+{
+    int res = DO_SYSCALL_3(SYS_WAITPID, pid, status, options);
+    RETURN_WITH_ERRNO(res, pid, -1);
+}
+
+pid_t getpid()
+{
+    int res = DO_SYSCALL_0(SYS_GETPID);
+    RETURN_WITH_ERRNO(res, (pid_t)res, -1);
+}
+
+int setpgid(pid_t pid, pid_t pgid)
+{
+    int res = DO_SYSCALL_2(SYS_SETPGID, pid, pgid);
+    RETURN_WITH_ERRNO(res, 0, -1);
+}
+
+pid_t getpgid(pid_t pid)
+{
+    int res = DO_SYSCALL_1(SYS_GETPGID, pid);
+    RETURN_WITH_ERRNO(res, (pid_t)res, -1);
+}
+
+uint32_t usleep(uint32_t usec)
+{
+    timespec_t ts = { 0 };
+    ts.tv_sec = usec / 1000000;
+    ts.tv_nsec = (usec % 1000000) * 1000;
+    int err = nanosleep(&ts, NULL);
+    if (err) {
+        return 0;
+    }
+    return usec;
+}
+
+uint32_t sleep(uint32_t seconds)
+{
+    timespec_t ts = { 0 };
+    ts.tv_sec = seconds;
+    int err = nanosleep(&ts, NULL);
+    if (err) {
+        return 0;
+    }
+    return seconds;
+}