build: Build mlibc + add distclean target

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 0 insertions, 284 deletions

diff --git a/lib/mlibc/options/posix/generic/pwd-stubs.cpp b/lib/mlibc/options/posix/generic/pwd-stubs.cpp
deleted file mode 100644
index 5d8f618..0000000
--- a/lib/mlibc/options/posix/generic/pwd-stubs.cpp
+++ /dev/null
@@ -1,284 +0,0 @@
-
-#include <errno.h>
-#include <pwd.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <bits/ensure.h>
-
-#include <mlibc/debug.hpp>
-
-namespace {
-	FILE *global_file; // Used by setpwent/getpwent/endpwent.
-
-	bool open_global_file() {
-		if(!global_file) {
-			global_file = fopen("/etc/passwd", "r");
-			if(!global_file) {
-				errno = EIO;
-				return false;
-			}
-		}
-
-		return true;
-	}
-
-	void close_global_file() {
-		if(global_file) {
-			fclose(global_file);
-			global_file = nullptr;
-		}
-	}
-
-	bool extract_entry(frg::string_view line, passwd *entry) {
-		frg::string_view segments[8];
-
-		// Parse the line into 7 or 8 segments.
-		size_t s = 0;
-		int n;
-		for(n = 0; n < 7; n++) {
-			size_t d = line.find_first(':', s);
-			if(d == size_t(-1))
-				break;
-			segments[n] = line.sub_string(s, d - s);
-			s = d + 1;
-		}
-		if(line.find_first(':', s) != size_t(-1))
-			return false;
-		segments[n] = line.sub_string(s, line.size() - s);
-		n++;
-
-		if(n < 7)
-			return false;
-
-		// TODO: Handle strndup() failure.
-		auto name = strndup(segments[0].data(), segments[0].size());
-		__ensure(name);
-
-		auto passwd = strndup(segments[1].data(), segments[1].size());
-		__ensure(passwd);
-
-		auto uid = segments[2].to_number<int>();
-		if(!uid)
-			return false;
-		auto gid = segments[3].to_number<int>();
-		if(!gid)
-			return false;
-
-		auto real_name = strndup(segments[4].data(), segments[4].size());
-		__ensure(real_name);
-		auto dir = strndup(segments[5].data(), segments[5].size());
-		__ensure(dir);
-		auto shell = strndup(segments[6].data(), segments[6].size());
-		__ensure(shell);
-
-		// Chop the newline off the end of shell
-		__ensure(strlen(shell) > 0);
-		shell[strlen(shell) - 1] = '\0';
-
-		entry->pw_name = name;
-		entry->pw_passwd = passwd;
-		entry->pw_uid = *uid;
-		entry->pw_gid = *gid;
-		entry->pw_dir = dir;
-		entry->pw_shell = shell;
-		entry->pw_gecos = real_name;
-		return true;
-	}
-
-	void copy_to_buffer(passwd *pwd, char *buffer, size_t size) {
-		char *pw_dir = stpcpy(buffer, pwd->pw_name) + 1;
-		free(pwd->pw_name);
-		pwd->pw_name = buffer;
-
-		char *pw_shell = stpcpy(pw_dir, pwd->pw_dir) + 1;
-		free(pwd->pw_dir);
-		pwd->pw_dir = pw_dir;
-
-		char *pw_passwd = stpcpy(pw_shell, pwd->pw_shell) + 1;
-		free(pwd->pw_shell);
-		pwd->pw_shell = pw_shell;
-
-		char *end = stpcpy(pw_passwd, pwd->pw_passwd);
-		__ensure(end <= buffer + size);
-		free(pwd->pw_passwd);
-		pwd->pw_passwd = pw_passwd;
-	}
-
-	void clear_entry(passwd *entry) {
-		free(entry->pw_name);
-		free(entry->pw_dir);
-		free(entry->pw_passwd);
-		free(entry->pw_shell);
-		entry->pw_name = nullptr;
-		entry->pw_dir = nullptr;
-		entry->pw_passwd = nullptr;
-		entry->pw_shell = nullptr;
-	}
-}
-
-struct passwd *getpwent(void) {
-	static passwd entry;
-	char line[NSS_BUFLEN_PASSWD];
-
-	if(!open_global_file()) {
-		return nullptr;
-	}
-
-	if (fgets(line, NSS_BUFLEN_PASSWD, global_file)) {
-		clear_entry(&entry);
-		if(!extract_entry(line, &entry)) {
-			errno = EINVAL;	// I suppose this can be a valid errno?
-			return nullptr;
-		}
-		return &entry;
-	}
-
-	if(ferror(global_file)) {
-		errno = EIO;
-	}
-
-	return nullptr;
-}
-
-struct passwd *getpwnam(const char *name) {
-	static passwd entry;
-	auto file = fopen("/etc/passwd", "r");
-	if(!file)
-		return nullptr;
-
-	char line[NSS_BUFLEN_PASSWD];
-	while(fgets(line, NSS_BUFLEN_PASSWD, file)) {
-		clear_entry(&entry);
-		if(!extract_entry(line, &entry))
-			continue;
-		if(!strcmp(entry.pw_name, name)) {
-			fclose(file);
-			return &entry;
-		}
-	}
-
-	int err = errno;
-	if(ferror(file)) {
-		err = EIO;
-	}
-
-	fclose(file);
-	errno = err;
-	return nullptr;
-}
-
-int getpwnam_r(const char *name, struct passwd *pwd, char *buffer, size_t size, struct passwd **result) {
-	*result = nullptr;
-	auto file = fopen("/etc/passwd", "r");
-	if(!file) {
-		return EIO;
-	}
-
-	char line[NSS_BUFLEN_PASSWD];
-	while(fgets(line, NSS_BUFLEN_PASSWD, file)) {
-		if(!extract_entry(line, pwd))
-			continue;
-		if(!strcmp(pwd->pw_name, name)) {
-			fclose(file);
-
-			size_t required_size = strlen(pwd->pw_name) + strlen(pwd->pw_dir)
-				+ strlen(pwd->pw_shell) + strlen(pwd->pw_passwd) + 4;
-			if (size < required_size)
-				return ERANGE;
-
-			copy_to_buffer(pwd, buffer, size);
-			*result = pwd;
-			return 0;
-		}
-	}
-
-	int ret = 0;
-	if(ferror(file)) {
-		ret = EIO;
-	}
-
-	fclose(file);
-	return ret;
-}
-
-struct passwd *getpwuid(uid_t uid) {
-	static passwd entry;
-	auto file = fopen("/etc/passwd", "r");
-	if(!file)
-		return nullptr;
-
-	char line[NSS_BUFLEN_PASSWD];
-	while(fgets(line, NSS_BUFLEN_PASSWD, file)) {
-		clear_entry(&entry);
-		if(!extract_entry(line, &entry))
-			continue;
-		if(entry.pw_uid == uid) {
-			fclose(file);
-			return &entry;
-		}
-	}
-
-	int err = ESRCH;
-	if(ferror(file)) {
-		err = EIO;
-	}
-
-	fclose(file);
-	errno = err;
-	return nullptr;
-}
-
-int getpwuid_r(uid_t uid, struct passwd *pwd, char *buffer, size_t size, struct passwd **result) {
-	*result = nullptr;
-	auto file = fopen("/etc/passwd", "r");
-	if(!file) {
-		return EIO;
-	}
-
-	char line[NSS_BUFLEN_PASSWD];
-	while(fgets(line, NSS_BUFLEN_PASSWD, file)) {
-		if(!extract_entry(line, pwd))
-			continue;
-		if(pwd->pw_uid == uid) {
-			fclose(file);
-
-			size_t required_size = strlen(pwd->pw_name) + strlen(pwd->pw_dir)
-				+ strlen(pwd->pw_shell) + + strlen(pwd->pw_passwd) + 4;
-			if (size < required_size)
-				return ERANGE;
-
-			copy_to_buffer(pwd, buffer, size);
-			*result = pwd;
-			return 0;
-		}
-	}
-
-	int ret = 0;
-	if(ferror(file)) {
-		ret = EIO;
-	}
-
-	fclose(file);
-	return ret;
-}
-
-void setpwent(void) {
-	if(!open_global_file()) {
-		return;
-	}
-	rewind(global_file);
-}
-
-void endpwent(void) {
-	close_global_file();
-}
-
-int putpwent(const struct passwd *, FILE *) {
-	__ensure(!"Not implemented");
-	__builtin_unreachable();
-}
-
-struct passwd *fgetpwent(FILE *) {
-	__ensure(!"Not implemented");
-	__builtin_unreachable();
-}