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55abdd1f5e
After the nolibc includes were split to facilitate portability from standard libcs, programs that include only what they need may miss some symbols which are needed by libgcc. This is the case for raise() which is needed by the divide by zero code in some architectures for example. Regardless, being able to include only the apparently needed files is convenient. Instead of trying to move all exported definitions to a single file, since this can change over time, this patch takes another approach consisting in including the nolibc header at the end of all standard include files. This way their types and functions are already known at the moment of inclusion, and including any single one of them is sufficient to bring all the required ones. Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
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/*
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* unistd function definitions for NOLIBC
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* Copyright (C) 2017-2022 Willy Tarreau <w@1wt.eu>
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*/
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#ifndef _NOLIBC_UNISTD_H
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#define _NOLIBC_UNISTD_H
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#include "std.h"
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#include "arch.h"
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#include "types.h"
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#include "sys.h"
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static __attribute__((unused))
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int msleep(unsigned int msecs)
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{
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struct timeval my_timeval = { msecs / 1000, (msecs % 1000) * 1000 };
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if (sys_select(0, 0, 0, 0, &my_timeval) < 0)
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return (my_timeval.tv_sec * 1000) +
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(my_timeval.tv_usec / 1000) +
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!!(my_timeval.tv_usec % 1000);
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else
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return 0;
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}
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static __attribute__((unused))
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unsigned int sleep(unsigned int seconds)
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{
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struct timeval my_timeval = { seconds, 0 };
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if (sys_select(0, 0, 0, 0, &my_timeval) < 0)
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return my_timeval.tv_sec + !!my_timeval.tv_usec;
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else
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return 0;
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}
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static __attribute__((unused))
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int usleep(unsigned int usecs)
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{
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struct timeval my_timeval = { usecs / 1000000, usecs % 1000000 };
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return sys_select(0, 0, 0, 0, &my_timeval);
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}
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static __attribute__((unused))
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int tcsetpgrp(int fd, pid_t pid)
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{
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return ioctl(fd, TIOCSPGRP, &pid);
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}
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/* make sure to include all global symbols */
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#include "nolibc.h"
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#endif /* _NOLIBC_UNISTD_H */
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