add directory study

2024-02-19 00:25:23 -05:00
parent b1306b38b1
commit f3774e2f8c
4001 changed files with 2285787 additions and 0 deletions
--- a/study/linux-travel/MINIX-1.5/1.5/Source/commands/chown.c
+++ b/study/linux-travel/MINIX-1.5/1.5/Source/commands/chown.c
@@ -0,0 +1,105 @@
+/*
+ * chown-	Change the owner and/or group ID of a file.
+ *
+ * Author:	Bert Reuling (bert@kyber.UUCP) 
+ *
+ * Revision History:
+ *	1.1  89/09/25 bert@kyber.UUCP 		Initial revision
+ *	     89/10/04 waltje@kyber.UUCP		Adapted to MINIX Style Sheet
+ */
+#include <sys/types.h>
+#include <ctype.h>
+#include <grp.h>
+#include <pwd.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <stdio.h>
+
+#ifndef TRUE
+#	define TRUE  1
+#	define FALSE 0
+#endif
+
+static char rcsid[] = "$Header: chown.c,v 1.1 89/10/04 20:45:00 bert Exp $";
+
+
+main(argc, argv)
+int argc;
+char *argv[];
+{
+  int i, uid, gid, Chown, status = 0;
+  char *pgmname, *uids, *gids;
+  struct passwd *pwd;
+  struct group *grp;
+  struct stat st;
+
+  if ((pgmname = strrchr(argv[0], '/')) != NULL) pgmname++;
+    else pgmname = argv[0];
+  if (strcmp(pgmname, "chown") == 0) Chown = TRUE;
+    else if (strcmp(pgmname, "chgrp") == 0) Chown = FALSE;
+           else {
+      		 (void) fprintf(stderr, "%s: should be named \"chown\" or \"chgrp\"\n", argv[0]);
+	         (void) exit(-1);
+   	   }
+  if (argc < 3) {
+	(void) fprintf(stderr,"Usage: %s %s file ...\n", pgmname, (Chown) ? "owner" : "group");
+      	(void) exit(1);
+  }
+  if ((gids = strchr(argv[1], '.')) != NULL) {
+  	*gids++ = '\0';
+      	uids = argv[1];
+  } else {
+          if (Chown) {
+         	uids = argv[1];
+         	gids = NULL;
+      	  } else {
+         	  uids = NULL;
+         	  gids = argv[1];
+      	    }
+  }
+  if (uids == NULL) pwd = NULL;
+    else {
+          if (isdigit(*uids)) pwd = getpwuid(atoi(uids));
+      	    else pwd = getpwnam(uids);
+          if (pwd == NULL) {
+         	(void) fprintf(stderr, "%s: unknown user id %s\n", pgmname, uids);
+         	(void) exit(-1);
+      	  }
+    }
+  if (gids == NULL) grp = NULL;
+    else {
+          if (isdigit(*gids)) grp = getgrgid(atoi(gids));
+            else grp = getgrnam(gids);
+          if (grp == NULL) {
+         	(void) fprintf(stderr, "%s: unknown group: %s\n", pgmname, gids);
+         	(void) exit(-1);
+      	  }
+    }
+  for (i = 2; i < argc; i++) {
+  	if (stat(argv[i], &st) != -1) {
+        uid = (pwd == NULL) ? st.st_uid : pwd->pw_uid;
+        gid = (grp == NULL) ? st.st_gid : grp->gr_gid;
+        if (chown(argv[i], uid, gid) == -1) {
+        	(void) fprintf(stderr,"%s: not changed\n", argv[i]);
+            	status++;
+        }
+#ifdef _MINIX
+        /*
+         * chown(2) should do this ...
+         */
+        if (getuid() != 0) {
+		st.st_mode &= ~S_ISUID;
+            	st.st_mode &= ~S_ISGID;
+            	if (chmod(argv[i], st.st_mode) == -1) {
+               		(void) fprintf(stderr, "%s: mode not changed\n", argv[i]);
+               		status++;
+            	}
+        }
+#endif
+     } else {
+             (void) perror(argv[i]);
+             status++;
+       }
+  }
+  (void) exit(status);
+}