From 1552e3f5538bef613f7fb8b6b585734caffa69f2 Mon Sep 17 00:00:00 2001
From: Your Name <you@example.com>
Date: Tue, 26 Mar 2024 08:36:15 +0300
Subject: [PATCH] fixed

---
 src/coreutils/ls/ls.c       | 40 ++++++++++++-------------------------
 src/findutils/grep/build.sh |  3 +++
 src/findutils/grep/grep.c   | 30 ++++++++++++++++++++++++++++
 src/procps/ps/ps.c          |  1 +
 4 files changed, 47 insertions(+), 27 deletions(-)
 create mode 100755 src/findutils/grep/build.sh
 create mode 100644 src/findutils/grep/grep.c

diff --git a/src/coreutils/ls/ls.c b/src/coreutils/ls/ls.c
index 8945cb2..033f68b 100644
--- a/src/coreutils/ls/ls.c
+++ b/src/coreutils/ls/ls.c
@@ -68,15 +68,22 @@ struct d_node *stat_file(char *filename, int lfile) {
 }
 
 struct d_node **list(const char *path, size_t *nfiles, int *ret) {
+	struct stat sb;
+	if (mu_get_stat("ls", path, &sb))
+		return NULL;
+
+	struct d_node **dir = malloc((sb.st_nlink + 2) * sizeof(struct d_node));
+	if (dir == NULL) {
+		fprintf(stderr, "ls: malloc failed\n");
+		exit(1);
+	}
+
 	DIR *dp = opendir(path);
 	if (dp == NULL) {
 		fprintf(stderr, "ls: %s: %s\n", path, strerror(errno));
 		return NULL;
 	}
 
-	struct d_node **dir, *cur, *dr = NULL;
-	size_t files = 0;
-
 	struct dirent *ep;
 	while ((ep = readdir(dp)) != NULL) {
 		if (ep->d_name[0] == '.' && !a_flag)
@@ -86,38 +93,17 @@ struct d_node **list(const char *path, size_t *nfiles, int *ret) {
 		if (full_path == NULL)
 			continue;
 
-		cur = stat_file(full_path, 0);
-		if (cur == NULL) {
+		dir[*nfiles] = stat_file(full_path, 0);
+		if (dir[*nfiles] == NULL) {
 			*ret = 1;
 			free(full_path);
 			continue;
 		}
 
-		cur->next = dr;
-		dr = cur;
-
-		files++;
+		(*nfiles)++;
 	}
 
 	closedir(dp);
-
-	if (dr == NULL)
-		return NULL;
-
-	*nfiles = files;
-	dir = malloc((files + 1) * sizeof(struct d_node *));
-	if (dir == NULL) {
-		fprintf(stderr, "ls: malloc failed\n");
-		exit(1);
-	}
-
-	for (size_t i = 0; ; i++) {
-		dir[i] = dr;
-		dr = dr->next;
-		if (dr == NULL)
-			break;
-	}
-
 	return dir;
 }
 
diff --git a/src/findutils/grep/build.sh b/src/findutils/grep/build.sh
new file mode 100755
index 0000000..6d8974b
--- /dev/null
+++ b/src/findutils/grep/build.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+project_dir=$(pwd)
+echo ./*.c $CFLAGS -o $OUTPUT$(basename $project_dir) | xargs $CC
diff --git a/src/findutils/grep/grep.c b/src/findutils/grep/grep.c
new file mode 100644
index 0000000..203ba95
--- /dev/null
+++ b/src/findutils/grep/grep.c
@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <regex.h>
+
+typedef struct {
+	char *pattern;
+	regex_t rgex;
+} PATTERN;
+
+int main(int argc, char **argv) {
+
+	int opt;
+	while ((opt = getopt(argc, argv, "e:")) != -1) {
+		switch (opt) {
+			case 'e':
+				addpattern(optarg);
+				break;
+
+			default:
+				printf("grep [e] [PATTERN | -e PATTERN]\n");
+				return 0;
+		}
+	}
+
+	argv += optind;
+	argc -= optind;
+	return 0;
+}
diff --git a/src/procps/ps/ps.c b/src/procps/ps/ps.c
index ef57b22..6044173 100644
--- a/src/procps/ps/ps.c
+++ b/src/procps/ps/ps.c
@@ -1,3 +1,4 @@
+#include <fcntl.h>
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>