6ad3f09bd4
Include termios.h as POSIX fallback when not glibc, bsd or solaris. POSIX says that termios.h should define struct termios and TCAFLUSH. http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/termios.h.html This fixes the following compile errors with musl libc: util/qemu-openpty.c: In function 'qemu_openpty_raw': util/qemu-openpty.c:112:20: error: storage size of 'tty' isn't known struct termios tty; ^ ... util/qemu-openpty.c:128:24: error: 'TCSAFLUSH' undeclared (first use in this function) tcsetattr(*aslave, TCSAFLUSH, &tty); ^ Signed-off-by: Natanael Copa <ncopa@alpinelinux.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
138 lines
3.8 KiB
C
138 lines
3.8 KiB
C
/*
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* qemu-openpty.c
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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* Copyright (c) 2010 Red Hat, Inc.
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*
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* Wrapper function qemu_openpty() implementation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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/*
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* This is not part of oslib-posix.c because this function
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* uses openpty() which often in -lutil, and if we add this
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* dependency to oslib-posix.o, every app will have to be
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* linked with -lutil.
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*/
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#include "config-host.h"
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#include "qemu-common.h"
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#if defined(__GLIBC__)
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# include <pty.h>
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#elif defined CONFIG_BSD
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# include <termios.h>
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# if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
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# include <libutil.h>
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# else
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# include <util.h>
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# endif
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#elif defined CONFIG_SOLARIS
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# include <termios.h>
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# include <stropts.h>
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#else
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# include <termios.h>
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#endif
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#ifdef __sun__
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/* Once Solaris has openpty(), this is going to be removed. */
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static int openpty(int *amaster, int *aslave, char *name,
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struct termios *termp, struct winsize *winp)
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{
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const char *slave;
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int mfd = -1, sfd = -1;
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*amaster = *aslave = -1;
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mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
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if (mfd < 0)
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goto err;
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if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
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goto err;
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if ((slave = ptsname(mfd)) == NULL)
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goto err;
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if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
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goto err;
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if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
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(termp != NULL && tcgetattr(sfd, termp) < 0))
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goto err;
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if (amaster)
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*amaster = mfd;
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if (aslave)
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*aslave = sfd;
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if (winp)
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ioctl(sfd, TIOCSWINSZ, winp);
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return 0;
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err:
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if (sfd != -1)
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close(sfd);
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close(mfd);
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return -1;
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}
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static void cfmakeraw (struct termios *termios_p)
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{
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termios_p->c_iflag &=
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~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
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termios_p->c_oflag &= ~OPOST;
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termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
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termios_p->c_cflag &= ~(CSIZE|PARENB);
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termios_p->c_cflag |= CS8;
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termios_p->c_cc[VMIN] = 0;
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termios_p->c_cc[VTIME] = 0;
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}
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#endif
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int qemu_openpty_raw(int *aslave, char *pty_name)
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{
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int amaster;
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struct termios tty;
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#if defined(__OpenBSD__) || defined(__DragonFly__)
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char pty_buf[PATH_MAX];
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#define q_ptsname(x) pty_buf
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#else
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char *pty_buf = NULL;
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#define q_ptsname(x) ptsname(x)
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#endif
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if (openpty(&amaster, aslave, pty_buf, NULL, NULL) < 0) {
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return -1;
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}
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/* Set raw attributes on the pty. */
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tcgetattr(*aslave, &tty);
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cfmakeraw(&tty);
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tcsetattr(*aslave, TCSAFLUSH, &tty);
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if (pty_name) {
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strcpy(pty_name, q_ptsname(amaster));
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}
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return amaster;
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}
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