diff options
Diffstat (limited to 'Src/Modules/zpty.c')
| -rw-r--r-- | Src/Modules/zpty.c | 46 |
1 files changed, 31 insertions, 15 deletions
diff --git a/Src/Modules/zpty.c b/Src/Modules/zpty.c index b766865dd..d87e32744 100644 --- a/Src/Modules/zpty.c +++ b/Src/Modules/zpty.c @@ -292,6 +292,7 @@ get_pty(int master, int *retfd) } } } + return 1; /* don't try to open a slave if we got no master */ } name[5] = 't'; if ((sfd = open(name, O_RDWR|O_NOCTTY)) >= 0) { @@ -436,12 +437,15 @@ newptycmd(char *nam, char *pname, char **args, int echo, int nblock) zexit(lastval, ZEXIT_NORMAL); } #ifndef USE_CYGWIN_FIX - master = movefd(master); - if (master == -1) { - zerrnam(nam, "cannot duplicate fd %d: %e", master, errno); - scriptname = oscriptname; - ineval = oineval; - return 1; + { + int orig_master = master; + master = movefd(master); + if (master == -1) { + zerrnam(nam, "cannot duplicate fd %d: %e", orig_master, errno); + scriptname = oscriptname; + ineval = oineval; + return 1; + } } #else addmodulefd(master, FDT_INTERNAL); @@ -529,7 +533,7 @@ deleteallptycmds(void) static void checkptycmd(Ptycmd cmd) { - char c; + unsigned char c; int r; if (cmd->read != -1 || cmd->fin) @@ -581,14 +585,19 @@ ptyread(char *nam, Ptycmd cmd, char **args, int noblock, int mustmatch) buf = (char *) zhalloc((blen = 256) + 1); } if (cmd->read != -1) { - buf[used] = (char) cmd->read; - buf[used + 1] = '\0'; - seen = used = 1; + int readchar = cmd->read; cmd->read = -1; + if (imeta(readchar)) { + buf[used++] = Meta; + buf[used++] = (char) (readchar ^ 32); + } else + buf[used++] = (char) readchar; + buf[used] = '\0'; + seen = 1; } do { if (noblock && cmd->read == -1) { - int pollret; + int pollret = -1; /* * Check there is data available. Borrowed from * poll_read() in utils.c and simplified. @@ -604,6 +613,7 @@ ptyread(char *nam, Ptycmd cmd, char **args, int noblock, int mustmatch) (SELECT_ARG_2_T) &foofd, NULL, NULL, &expire_tv); #else #ifdef FIONREAD + int val; if (ioctl(cmd->fd, FIONREAD, (char *) &val) == 0) pollret = (val > 0); #endif @@ -617,9 +627,13 @@ ptyread(char *nam, Ptycmd cmd, char **args, int noblock, int mustmatch) * character. cmd->read stores the character read. */ long mode; + unsigned char c; - if (setblock_fd(0, cmd->fd, &mode)) - pollret = read(cmd->fd, &cmd->read, 1); + if (setblock_fd(0, cmd->fd, &mode)) { + pollret = read(cmd->fd, &c, 1); + if (pollret == 1) + cmd->read = (int) c; + } if (mode != -1) fcntl(cmd->fd, F_SETFL, mode); } @@ -688,8 +702,10 @@ ptyread(char *nam, Ptycmd cmd, char **args, int noblock, int mustmatch) #endif #endif ) { - cmd->old = (char *) zalloc(cmd->olen = used); - memcpy(cmd->old, buf, cmd->olen); + if (used) { + cmd->old = (char *) zalloc(cmd->olen = used); + memcpy(cmd->old, buf, cmd->olen); + } if (prog) freepatprog(prog); |