1 /* SPDX-License-Identifier: LGPL-2.1 OR MIT */ 2 /* 3 * unistd function definitions for NOLIBC 4 * Copyright (C) 2017-2022 Willy Tarreau <w@1wt.eu> 5 */ 6 7 #ifndef _NOLIBC_UNISTD_H 8 #define _NOLIBC_UNISTD_H 9 10 #include "std.h" 11 #include "arch.h" 12 #include "types.h" 13 #include "sys.h" 14 15 16 #define STDIN_FILENO 0 17 #define STDOUT_FILENO 1 18 #define STDERR_FILENO 2 19 20 21 static __attribute__((unused)) 22 int msleep(unsigned int msecs) 23 { 24 struct timeval my_timeval = { msecs / 1000, (msecs % 1000) * 1000 }; 25 26 if (sys_select(0, 0, 0, 0, &my_timeval) < 0) 27 return (my_timeval.tv_sec * 1000) + 28 (my_timeval.tv_usec / 1000) + 29 !!(my_timeval.tv_usec % 1000); 30 else 31 return 0; 32 } 33 34 static __attribute__((unused)) 35 unsigned int sleep(unsigned int seconds) 36 { 37 struct timeval my_timeval = { seconds, 0 }; 38 39 if (sys_select(0, 0, 0, 0, &my_timeval) < 0) 40 return my_timeval.tv_sec + !!my_timeval.tv_usec; 41 else 42 return 0; 43 } 44 45 static __attribute__((unused)) 46 int usleep(unsigned int usecs) 47 { 48 struct timeval my_timeval = { usecs / 1000000, usecs % 1000000 }; 49 50 return sys_select(0, 0, 0, 0, &my_timeval); 51 } 52 53 static __attribute__((unused)) 54 int tcsetpgrp(int fd, pid_t pid) 55 { 56 return ioctl(fd, TIOCSPGRP, &pid); 57 } 58 59 /* make sure to include all global symbols */ 60 #include "nolibc.h" 61 62 #endif /* _NOLIBC_UNISTD_H */ 63