Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
59 lines
1006 B
C
59 lines
1006 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#if !defined(__NET_KSFT_H__)
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#define __NET_KSFT_H__
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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static inline void ksft_ready(void)
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{
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const char msg[7] = "ready\n";
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char *env_str;
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int fd;
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env_str = getenv("KSFT_READY_FD");
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if (env_str) {
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fd = atoi(env_str);
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if (!fd) {
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fprintf(stderr, "invalid KSFT_READY_FD = '%s'\n",
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env_str);
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return;
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}
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} else {
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fd = STDOUT_FILENO;
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}
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if (write(fd, msg, sizeof(msg)) < 0)
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perror("write()");
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if (fd != STDOUT_FILENO)
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close(fd);
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}
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static inline void ksft_wait(void)
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{
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char *env_str;
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char byte;
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int fd;
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env_str = getenv("KSFT_WAIT_FD");
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if (env_str) {
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fd = atoi(env_str);
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if (!fd) {
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fprintf(stderr, "invalid KSFT_WAIT_FD = '%s'\n",
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env_str);
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return;
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}
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} else {
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/* Not running in KSFT env, wait for input from STDIN instead */
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fd = STDIN_FILENO;
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}
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if (read(fd, &byte, sizeof(byte)) < 0)
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perror("read()");
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if (fd != STDIN_FILENO)
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close(fd);
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}
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#endif
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