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--- busybox-1.12.0/editors/vi.c Wed Aug 6 00:56:11 2008
+++ busybox-1.12.0-crontab_vi/editors/vi.c Sun Sep 21 17:30:47 2008
@@ -147,10 +147,10 @@
#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 @@
// 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 @@
}
//-------------------------------------------------------------------
- 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 @@
{
// 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;
}
@@ -2157,21 +2157,21 @@
//----- Come here when we get a continue signal -------------------
static void cont_sig(int sig UNUSED_PARAM)
{
- rawmode(); // terminal to "raw"
- last_status_cksum = 0; // force status update
- redraw(TRUE); // re-draw the screen
+ rawmode(); // terminal to "raw"
+ last_status_cksum = 0; // force status update
+ redraw(TRUE); // re-draw the screen
signal(SIGTSTP, suspend_sig);
signal(SIGCONT, SIG_DFL);
- kill(my_pid, SIGCONT);
+ kill(my_pid, SIGCONT); // huh? why? we are already "continued"...
}
//----- Come here when we get a Suspend signal -------------------
static void suspend_sig(int sig UNUSED_PARAM)
{
- place_cursor(rows - 1, 0, FALSE); // go to bottom of screen
- clear_to_eol(); // Erase to end of line
- cookmode(); // terminal to "cooked"
+ place_cursor(rows - 1, 0, FALSE); // go to bottom of screen
+ clear_to_eol(); // erase to end of line
+ cookmode(); // terminal to "cooked"
signal(SIGCONT, cont_sig);
signal(SIGTSTP, SIG_DFL);
@@ -2247,18 +2247,20 @@
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) {
+ 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");
}
- if (n <= 0)
- return 0; // error
+ /* 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
--- busybox-1.12.0/miscutils/crontab.c Wed Aug 6 00:56:08 2008
+++ busybox-1.12.0-crontab_vi/miscutils/crontab.c Sun Sep 21 17:30:47 2008
@@ -93,6 +93,7 @@
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 @@
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 @@
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 {
|
