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 static __attribute__((unused)) 17 int msleep(unsigned int msecs) 18 { 19 struct timeval my_timeval = { msecs / 1000, (msecs % 1000) * 1000 }; 20 21 if (sys_select(0, 0, 0, 0, &my_timeval) < 0) 22 return (my_timeval.tv_sec * 1000) + 23 (my_timeval.tv_usec / 1000) + 24 !!(my_timeval.tv_usec % 1000); 25 else 26 return 0; 27 } 28 29 static __attribute__((unused)) 30 unsigned int sleep(unsigned int seconds) 31 { 32 struct timeval my_timeval = { seconds, 0 }; 33 34 if (sys_select(0, 0, 0, 0, &my_timeval) < 0) 35 return my_timeval.tv_sec + !!my_timeval.tv_usec; 36 else 37 return 0; 38 } 39 40 static __attribute__((unused)) 41 int usleep(unsigned int usecs) 42 { 43 struct timeval my_timeval = { usecs / 1000000, usecs % 1000000 }; 44 45 return sys_select(0, 0, 0, 0, &my_timeval); 46 } 47 48 static __attribute__((unused)) 49 int tcsetpgrp(int fd, pid_t pid) 50 { 51 return ioctl(fd, TIOCSPGRP, &pid); 52 } 53 54 /* make sure to include all global symbols */ 55 #include "nolibc.h" 56 57 #endif /* _NOLIBC_UNISTD_H */ 58