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Diffstat (limited to 'std.c')
-rw-r--r--std.c40
1 files changed, 38 insertions, 2 deletions
diff --git a/std.c b/std.c
index 2ce1722..ef9e57a 100644
--- a/std.c
+++ b/std.c
@@ -3,6 +3,10 @@
#include <sys/wait.h>
#include <ctype.h>
#include <err.h>
+#include <fcntl.h>
+#if !(_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600)
+#include <pty.h>
+#endif
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
@@ -17,7 +21,7 @@
static void buffer(char c);
static void cmd(const char *cmdstr, ...);
static int getch();
-void getpty(void);
+static void getpty(void);
static void movea(int x, int y);
static void mover(int x, int y);
static void parseesc(void);
@@ -41,7 +45,7 @@ typedef struct {
static int cols = 80, lines = 25;
static int cx = 0, cy = 0;
static int c;
-int ptm, pts;
+static int ptm, pts;
static _Bool bold, digit, qmark;
static pid_t pid;
static RingBuffer buf;
@@ -208,6 +212,38 @@ scroll(int l) {
}
void
+getpty(void) {
+ char *ptsdev;
+
+#if defined(_GNU_SOURCE)
+ ptm = getpt();
+#elif _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600
+ ptm = posix_openpt(O_RDWR);
+#else
+ ptm = open("/dev/ptmx", O_RDWR);
+ if(ptm == -1)
+ if(openpty(&ptm, &pts, NULL, NULL, NULL) == -1)
+ err(EXIT_FAILURE, "cannot open pty");
+#endif
+#if defined(_XOPEN_SOURCE)
+ if(ptm != -1) {
+ if(grantpt(ptm) == -1)
+ err(EXIT_FAILURE, "cannot grant access to pty");
+ if(unlockpt(ptm) == -1)
+ err(EXIT_FAILURE, "cannot unlock pty");
+ ptsdev = ptsname(ptm);
+ if(!ptsdev)
+ err(EXIT_FAILURE, "slave pty name undefined");
+ pts = open(ptsdev, O_RDWR);
+ if(pts == -1)
+ err(EXIT_FAILURE, "cannot open slave pty");
+ }
+ else
+ err(EXIT_FAILURE, "cannot open pty");
+#endif
+}
+
+void
shell(void) {
static char *shell = NULL;