apply post-1.11.2 fixes, bump version to 1.11.31_11_31_11_stable

7 files changed, 86 insertions, 60 deletions

diff --git a/Makefile b/Makefile
index fc9b3c1da..190d14e2e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 VERSION = 1
 PATCHLEVEL = 11
-SUBLEVEL = 2
+SUBLEVEL = 3
 EXTRAVERSION =
 NAME = Unnamed
 
diff --git a/console-tools/kbd_mode.c b/console-tools/kbd_mode.c
index f40ee6403..2137d9f47 100644
--- a/console-tools/kbd_mode.c
+++ b/console-tools/kbd_mode.c
@@ -2,7 +2,7 @@
 /*
  * Mini kbd_mode implementation for busybox
  *
- * Copyright (C) 2007 Loïc Grenié <loic.grenie@gmail.com>
+ * Copyright (C) 2007 Loic Grenie <loic.grenie@gmail.com>
  *   written using Andries Brouwer <aeb@cwi.nl>'s kbd_mode from
  *   console-utils v0.2.3, licensed under GNU GPLv2
  *
@@ -46,6 +46,7 @@ int kbd_mode_main(int ATTRIBUTE_UNUSED argc, char **argv)
 		printf("The keyboard is in %s mode\n", mode);
 	} else {
 		opt = opt & UNICODE ? 3 : opt >> 1;
+		/* double cast prevents warnings about widening conversion */
 		xioctl(fd, KDSKBMODE, (void*)(ptrdiff_t)opt);
 	}
 
diff --git a/editors/vi.c b/editors/vi.c
index 81baa890f..1985be7db 100644
--- a/editors/vi.c
+++ b/editors/vi.c
@@ -147,10 +147,10 @@ struct globals {
 #endif
 
 	smallint editing;        // >0 while we are editing a file
-	                         // [code audit says "can be 0 or 1 only"]
+	                         // [code audit says "can be 0, 1 or 2 only"]
 	smallint cmd_mode;       // 0=command  1=insert 2=replace
 	int file_modified;       // buffer contents changed (counter, not flag!)
-	int last_file_modified; // = -1;
+	int last_file_modified;  // = -1;
 	int fn_start;            // index of first cmd line file name
 	int save_argc;           // how many file names on cmd line
 	int cmdcnt;              // repetition count
@@ -623,7 +623,7 @@ static void edit_file(char *fn)
 		// These are commands that change text[].
 		// Remember the input for the "." command
 		if (!adding2q && ioq_start == NULL
-		 && strchr(modifying_cmds, c)
+		 && c != '\0' && strchr(modifying_cmds, c)
 		) {
 			start_new_cmd_q(c);
 		}
@@ -645,8 +645,8 @@ static void edit_file(char *fn)
 	}
 	//-------------------------------------------------------------------
 
-	place_cursor(rows, 0, FALSE);	// go to bottom of screen
-	clear_to_eol();		// Erase to end of line
+	place_cursor(rows - 1, 0, FALSE); // go to bottom of screen
+	clear_to_eol(); // erase to end of line
 	cookmode();
 #undef cur_line
 }
@@ -2009,9 +2009,9 @@ static void start_new_cmd_q(char c)
 {
 	// get buffer for new cmd
 	// if there is a current cmd count put it in the buffer first
-	if (cmdcnt > 0)
+	if (cmdcnt > 0) {
 		lmc_len = sprintf(last_modifying_cmd, "%d%c", cmdcnt, c);
-	else { // just save char c onto queue
+	} else { // just save char c onto queue
 		last_modifying_cmd[0] = c;
 		lmc_len = 1;
 	}
@@ -2247,18 +2247,20 @@ static char readit(void)	// read (maybe cursor) key from stdin
 
 	fflush(stdout);
 	n = chars_to_parse;
-	// get input from User- are there already input chars in Q?
+	// get input from User - are there already input chars in Q?
 	if (n <= 0) {
 		// the Q is empty, wait for a typed char
+ again:
 		n = safe_read(STDIN_FILENO, readbuffer, sizeof(readbuffer));
-		if (n < 0) {
-			if (errno == EBADF || errno == EFAULT || errno == EINVAL
-			 || errno == EIO)
-				editing = 0; // want to exit
-			errno = 0;
-		}
-		if (n <= 0)
-			return 0;       // error
+		if (n <= 0) {
+			place_cursor(rows - 1, 0, FALSE); // go to bottom of screen
+			clear_to_eol(); // erase to end of line
+			cookmode(); // terminal to "cooked"
+			bb_error_msg_and_die("can't read user input");
+		}
+		/* elsewhere we can get very confused by NULs */
+		if (readbuffer[0] == '\0')
+			goto again;
 		if (readbuffer[0] == 27) {
 			// This is an ESC char. Is this Esc sequence?
 			// Could be bare Esc key. See if there are any
diff --git a/include/usage.h b/include/usage.h
index dcb6e344e..1165ad615 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -3640,8 +3640,8 @@
        "[OPTIONS] [-S|-K] ... [-- arguments...]"
 #define start_stop_daemon_full_usage "\n\n" \
        "Search for matching processes, and then\n" \
-       "-S: stop all matching processes.\n" \
-       "-K: start a process unless a matching process is found.\n" \
+       "-S: start a process unless a matching process is found.\n" \
+       "-K: stop all matching processes.\n" \
 	USE_GETOPT_LONG( \
      "\nProcess matching:" \
      "\n	-u,--user USERNAME|UID	Match only this user's processes" \
@@ -3651,7 +3651,7 @@
      "\n				in /proc/PID/cmdline" \
      "\n	-p,--pidfile FILE	Match a process with PID from the file" \
      "\n	All specified conditions must match" \
-     "\n-K only:" \
+     "\n-S only:" \
      "\n	-x,--exec EXECUTABLE	Program to run" \
      "\n	-a,--startas NAME	Zeroth argument" \
      "\n	-b,--background		Background" \
@@ -3660,7 +3660,7 @@
 	) \
      "\n	-c,--chuid USER[:[GRP]]	Change to user/group" \
      "\n	-m,--make-pidfile	Write PID to the pidfile specified by -p" \
-     "\n-S only:" \
+     "\n-K only:" \
      "\n	-s,--signal SIG		Signal to send" \
      "\n	-t,--test		Match only, exit with 0 if a process is found" \
      "\nOther:" \
@@ -3679,7 +3679,7 @@
      "\n			command in /proc/PID/cmdline" \
      "\n	-p FILE		Match a process with PID from the file" \
      "\n	All specified conditions must match" \
-     "\n-K only:" \
+     "\n-S only:" \
      "\n	-x EXECUTABLE	Program to run" \
      "\n	-a NAME		Zeroth argument" \
      "\n	-b		Background" \
@@ -3688,7 +3688,7 @@
 	) \
      "\n	-c USER[:[GRP]]	Change to user/group" \
      "\n	-m		Write PID to the pidfile specified by -p" \
-     "\n-S only:" \
+     "\n-K only:" \
      "\n	-s SIG		Signal to send" \
      "\n	-t		Match only, exit with 0 if a process is found" \
      "\nOther:" \
diff --git a/libbb/lineedit.c b/libbb/lineedit.c
index fb595c010..b3f4f5327 100644
--- a/libbb/lineedit.c
+++ b/libbb/lineedit.c
@@ -953,24 +953,33 @@ static void input_tab(smallint *lastWasTab)
 
 #if MAX_HISTORY > 0
 
+static void save_command_ps_at_cur_history(void)
+{
+	if (command_ps[0] != '\0') {
+		int cur = state->cur_history;
+		free(state->history[cur]);
+		state->history[cur] = xstrdup(command_ps);
+	}
+}
+
 /* state->flags is already checked to be nonzero */
-static void get_previous_history(void)
+static int get_previous_history(void)
 {
-	if (command_ps[0] != '\0' || state->history[state->cur_history] == NULL) {
-		free(state->history[state->cur_history]);
-		state->history[state->cur_history] = xstrdup(command_ps);
+	if ((state->flags & DO_HISTORY) && state->cur_history) {
+		save_command_ps_at_cur_history();
+		state->cur_history--;
+		return 1;
 	}
-	state->cur_history--;
+	beep();
+	return 0;
 }
 
 static int get_next_history(void)
 {
 	if (state->flags & DO_HISTORY) {
-		int ch = state->cur_history;
-		if (ch < state->cnt_history) {
-			get_previous_history(); /* save the current history line */
-			state->cur_history = ch + 1;
-			return state->cur_history;
+		if (state->cur_history < state->cnt_history) {
+			save_command_ps_at_cur_history(); /* save the current history line */
+			return ++state->cur_history;
 		}
 	}
 	beep();
@@ -992,6 +1001,7 @@ static void load_history(const char *fromfile)
 		for (hi = state->cnt_history; hi > 0;) {
 			hi--;
 			free(state->history[hi]);
+			state->history[hi] = NULL;
 		}
 
 		for (hi = 0; hi < MAX_HISTORY;) {
@@ -1003,14 +1013,14 @@ static void load_history(const char *fromfile)
 			l = strlen(hl);
 			if (l >= MAX_LINELEN)
 				hl[MAX_LINELEN-1] = '\0';
-			if (l == 0 || hl[0] == ' ') {
+			if (l == 0) {
 				free(hl);
 				continue;
 			}
 			state->history[hi++] = hl;
 		}
 		fclose(fp);
-		state->cur_history = state->cnt_history = hi;
+		state->cnt_history = hi;
 	}
 }
 
@@ -1040,19 +1050,27 @@ static void remember_in_history(const char *str)
 
 	if (!(state->flags & DO_HISTORY))
 		return;
-
+	if (str[0] == '\0')
+		return;
 	i = state->cnt_history;
-	free(state->history[MAX_HISTORY]);
-	state->history[MAX_HISTORY] = NULL;
-	/* After max history, remove the oldest command */
+	/* Don't save dupes */
+	if (i && strcmp(state->history[i-1], str) == 0)
+		return;
+
+	free(state->history[MAX_HISTORY]); /* redundant, paranoia */
+	state->history[MAX_HISTORY] = NULL; /* redundant, paranoia */
+
+	/* If history[] is full, remove the oldest command */
+	/* we need to keep history[MAX_HISTORY] empty, hence >=, not > */
 	if (i >= MAX_HISTORY) {
 		free(state->history[0]);
 		for (i = 0; i < MAX_HISTORY-1; i++)
 			state->history[i] = state->history[i+1];
+		/* i == MAX_HISTORY-1 */
 	}
-// Maybe "if (!i || strcmp(history[i-1], command) != 0) ..."
-// (i.e. do not save dups?)
+	/* i <= MAX_HISTORY-1 */
 	state->history[i++] = xstrdup(str);
+	/* i <= MAX_HISTORY */
 	state->cur_history = i;
 	state->cnt_history = i;
 #if ENABLE_FEATURE_EDITING_SAVEHISTORY
@@ -1394,6 +1412,7 @@ int read_line_input(const char *prompt, char *command, int maxsize, line_input_t
 	if ((state->flags & SAVE_HISTORY) && state->hist_file)
 		load_history(state->hist_file);
 #endif
+	state->cur_history = state->cnt_history;
 
 	/* prepare before init handlers */
 	cmdedit_y = 0;  /* quasireal y, not true if line > xt*yt */
@@ -1429,6 +1448,13 @@ int read_line_input(const char *prompt, char *command, int maxsize, line_input_t
 		}
 	}
 #endif
+
+#if 0
+	for (ic = 0; ic <= MAX_HISTORY; ic++)
+		bb_error_msg("history[%d]:'%s'", ic, state->history[ic]);
+	bb_error_msg("cur_history:%d cnt_history:%d", state->cur_history, state->cnt_history);
+#endif
+
 	/* Print out the command prompt */
 	parse_and_put_prompt(prompt);
 
@@ -1537,11 +1563,8 @@ int read_line_input(const char *prompt, char *command, int maxsize, line_input_t
 		vi_case(CTRL('P')|vbit:)
 		vi_case('k'|vbit:)
 			/* Control-p -- Get previous command from history */
-			if ((state->flags & DO_HISTORY) && state->cur_history > 0) {
-				get_previous_history();
+			if (get_previous_history())
 				goto rewrite_line;
-			}
-			beep();
 			break;
 #endif
 
@@ -1730,10 +1753,8 @@ int read_line_input(const char *prompt, char *command, int maxsize, line_input_t
 #if MAX_HISTORY > 0
 			case 'A':
 				/* Up Arrow -- Get previous command from history */
-				if ((state->flags & DO_HISTORY) && state->cur_history > 0) {
-					get_previous_history();
+				if (get_previous_history())
 					goto rewrite_line;
-				}
 				beep();
 				break;
 			case 'B':
@@ -1743,7 +1764,7 @@ int read_line_input(const char *prompt, char *command, int maxsize, line_input_t
  rewrite_line:
 				/* Rewrite the line with the selected history item */
 				/* change command */
-				command_len = strlen(strcpy(command, state->history[state->cur_history]));
+				command_len = strlen(strcpy(command, state->history[state->cur_history] ? : ""));
 				/* redraw and go to eol (bol, in vi */
 				redraw(cmdedit_y, (state->flags & VI_MODE) ? 9999 : 0);
 				break;
diff --git a/miscutils/crontab.c b/miscutils/crontab.c
index dc3179dac..38933cf4a 100644
--- a/miscutils/crontab.c
+++ b/miscutils/crontab.c
@@ -93,6 +93,7 @@ int crontab_main(int argc ATTRIBUTE_UNUSED, char **argv)
 	char *new_fname;
 	char *user_name;  /* -u USER */
 	int fd;
+	int src_fd;
 	int opt_ler;
 
 	/* file [opts]     Replace crontab from file
@@ -144,15 +145,15 @@ int crontab_main(int argc ATTRIBUTE_UNUSED, char **argv)
 		bb_show_usage();
 
 	/* Read replacement file under user's UID/GID/group vector */
+	src_fd = STDIN_FILENO;
 	if (!opt_ler) { /* Replace? */
 		if (!argv[0])
 			bb_show_usage();
 		if (NOT_LONE_DASH(argv[0])) {
-			fd = open_as_user(pas, argv[0]);
-			if (fd < 0)
+			src_fd = open_as_user(pas, argv[0]);
+			if (src_fd < 0)
 				bb_error_msg_and_die("user %s cannot read %s",
 						pas->pw_name, argv[0]);
-			xmove_fd(fd, STDIN_FILENO);
 		}
 	}
 
@@ -180,23 +181,23 @@ int crontab_main(int argc ATTRIBUTE_UNUSED, char **argv)
 		tmp_fname = xasprintf("%s.%u", crontab_dir, (unsigned)getpid());
 		/* No O_EXCL: we don't want to be stuck if earlier crontabs
 		 * were killed, leaving stale temp file behind */
-		fd = xopen3(tmp_fname, O_RDWR|O_CREAT|O_TRUNC, 0600);
-		xmove_fd(fd, STDIN_FILENO);
-		fchown(STDIN_FILENO, pas->pw_uid, pas->pw_gid);
+		src_fd = xopen3(tmp_fname, O_RDWR|O_CREAT|O_TRUNC, 0600);
+		fchown(src_fd, pas->pw_uid, pas->pw_gid);
 		fd = open(pas->pw_name, O_RDONLY);
 		if (fd >= 0) {
-			bb_copyfd_eof(fd, STDIN_FILENO);
+			bb_copyfd_eof(fd, src_fd);
 			close(fd);
+			xlseek(src_fd, 0, SEEK_SET);
 		}
+		close_on_exec_on(src_fd); /* don't want editor to see this fd */
 		edit_file(pas, tmp_fname);
-		xlseek(STDIN_FILENO, 0, SEEK_SET);
 		/* fall through */
 
 	case 0: /* Replace (no -l, -e, or -r were given) */
 		new_fname = xasprintf("%s.new", pas->pw_name);
 		fd = open(new_fname, O_WRONLY|O_CREAT|O_TRUNC|O_APPEND, 0600);
 		if (fd >= 0) {
-			bb_copyfd_eof(STDIN_FILENO, fd);
+			bb_copyfd_eof(src_fd, fd);
 			close(fd);
 			xrename(new_fname, pas->pw_name);
 		} else {
diff --git a/miscutils/taskset.c b/miscutils/taskset.c
index 708abd9f2..973f94ac3 100644
--- a/miscutils/taskset.c
+++ b/miscutils/taskset.c
@@ -35,7 +35,8 @@ static char *__from_cpuset(cpu_set_t *mask)
 #define TASKSET_PRINTF_MASK "%x"
 /* (void*) cast is for battling gcc: */
 /* "dereferencing type-punned pointer will break strict-aliasing rules" */
-#define from_cpuset(mask) (*(unsigned*)(void*)&(mask))
+#define from_cpuset(mask) ({ void *__vp = &(mask); *(unsigned*)__vp; })
+/* gcc 4.3.0 still complains: #define from_cpuset(mask) (*(unsigned*)(void*)&(mask)) */
 #endif