pkgtools

commit 3cec1e4924580621e9627a6a0da97734b1356498
parent b9351fb397cb428c1aac187fd7919ea554404544
Author: sin <sin@2f30.org>
Date:   Fri, 30 May 2014 14:08:46 +0100

Add infopkg

Diffstat:
M
Makefile
 | 
1
+
A
infopkg.c
 | 
144
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

2 files changed, 145 insertions(+), 0 deletions(-)
diff --git a/Makefile b/Makefile
@@ -8,6 +8,7 @@ LIB = \
 	strlcpy.o
 
 SRC = \
+	infopkg.c \
 	installpkg.c \
 	removepkg.c
 
diff --git a/infopkg.c b/infopkg.c
@@ -0,0 +1,144 @@
+/* See LICENSE file for copyright and license details. */
+#include <dirent.h>
+#include <errno.h>
+#include <libgen.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include "util.h"
+
+static void ownpkg(const char *, const char *);
+
+char *argv0;
+
+static void
+usage(void)
+{
+	fprintf(stderr, "usage: %s [-E filename] [-p prefix]\n", argv0);
+	fprintf(stderr, "  -E	 Look for the package that contains the given filename(s)\n");
+	fprintf(stderr, "  -p	 Set the installation prefix\n");
+	exit(1);
+}
+
+int
+main(int argc, char *argv[])
+{
+	DIR *dir;
+	struct dirent *dp;
+	char *prefix = "/";
+	char path[PATH_MAX];
+	int Eflag = 0;
+	int i;
+	int r;
+
+	ARGBEGIN {
+	case 'E':
+		Eflag = 1;
+		break;
+	case 'p':
+		prefix = ARGF();
+		break;
+	default:
+		usage();
+	} ARGEND;
+
+	if (Eflag == 0 || argc < 1)
+		usage();
+
+	r = chdir(prefix);
+	if (r < 0) {
+		fprintf(stderr, "chdir %s: %s\n", prefix,
+			strerror(errno));
+		return EXIT_FAILURE;
+	}
+
+	dir = opendir("var/pkg");
+	if (!dir) {
+		fprintf(stderr, "opendir %s: %s\n", "var/pkg",
+			strerror(errno));
+		return EXIT_FAILURE;
+	}
+
+	for (i = 0; i < argc; i++) {
+		while ((dp = readdir(dir))) {
+			if (strcmp(dp->d_name, ".") == 0 ||
+			    strcmp(dp->d_name, "..") == 0)
+				continue;
+			strlcpy(path, dp->d_name, sizeof(path));
+			ownpkg(basename(path), argv[i]);
+		}
+		rewinddir(dir);
+	}
+
+	closedir(dir);
+
+	return EXIT_SUCCESS;
+}
+
+static void
+ownpkg(const char *pkg, const char *f)
+{
+	struct stat sb1, sb2;
+	char buf[BUFSIZ], *p;
+	char path[PATH_MAX], filename[PATH_MAX];
+	FILE *fp;
+	int r;
+
+	for (; *f == '/'; f++)
+		;
+	strlcpy(filename, f, sizeof(filename));
+
+	r = lstat(filename, &sb1);
+	if (r < 0) {
+		fprintf(stderr, "stat %s: %s\n", f, strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+	if (S_ISREG(sb1.st_mode) == 0) {
+		fprintf(stderr, "%s is not a regular file\n", filename);
+		exit(EXIT_FAILURE);
+	}
+
+	strlcpy(path, "var/pkg/", sizeof(path));
+	strlcat(path, pkg, sizeof(path));
+
+	fp = fopen(path, "r");
+	if (!fp) {
+		fprintf(stderr, "fopen %s: %s\n", path,
+			strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+
+	while (fgets(buf, sizeof(buf), fp)) {
+		p = strrchr(buf, '\n');
+		if (p)
+			*p = '\0';
+
+		if (buf[0] == '\0') {
+			fprintf(stderr, "nil file entry in %s, skipping\n", path);
+			continue;
+		}
+
+		r = lstat(buf, &sb2);
+		if (r < 0) {
+			fprintf(stderr, "stat %s: %s\n",
+				buf, strerror(errno));
+			continue;
+		}
+
+		if (sb1.st_dev == sb2.st_dev &&
+		    sb1.st_ino == sb2.st_ino) {
+			printf("/%s is owned by %s\n", filename, pkg);
+			break;
+		}
+	}
+	if (ferror(fp)) {
+		fprintf(stderr, "I/O error while processing %s\n", path);
+		exit(EXIT_FAILURE);
+	}
+
+	fclose(fp);
+}