find: support -HLP

[oweals/busybox.git] / shell / shell_common.c

diff --git a/shell/shell_common.c b/shell/shell_common.c
index bbc22ed34b49c06b8ea3dcfba0432b6f637e542d..0051f21d9eb08d878ff72d6c6dda984b265a12d2 100644 (file)
--- a/shell/shell_common.c
+++ b/shell/shell_common.c
@@ -18,6 +18,7 @@
  */
 #include "libbb.h"
 #include "shell_common.h"
+#include <sys/resource.h> /* getrlimit */
 
 const char defifsvar[] ALIGN1 = "IFS= \t\n";
 
@@ -138,7 +139,13 @@ shell_builtin_read(void FAST_FUNC (*setvar)(const char *name, const char *val),
                old_tty = tty;
                if (nchars) {
                        tty.c_lflag &= ~ICANON;
-                       tty.c_cc[VMIN] = nchars < 256 ? nchars : 255;
+                       // Setting it to more than 1 breaks poll():
+                       // it blocks even if there's data. !??
+                       //tty.c_cc[VMIN] = nchars < 256 ? nchars : 255;
+                       /* reads would block only if < 1 char is available */
+                       tty.c_cc[VMIN] = 1;
+                       /* no timeout (reads block forever) */
+                       tty.c_cc[VTIME] = 0;
                }
                if (read_flags & BUILTIN_READ_SILENT) {
                        tty.c_lflag &= ~(ECHO | ECHOK | ECHONL);
@@ -163,7 +170,7 @@ shell_builtin_read(void FAST_FUNC (*setvar)(const char *name, const char *val),
                int timeout;
 
                if ((bufpos & 0xff) == 0)
-                       buffer = xrealloc(buffer, bufpos + 0x100);
+                       buffer = xrealloc(buffer, bufpos + 0x101);
 
                timeout = -1;
                if (end_ms) {