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parent
821bb9a2dc
commit
4da3758acf
@ -41,8 +41,9 @@ impl Syscall {
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) -> Result<usize, SystemError> {
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let ret = unsafe { c_sys_wait4(pid, wstatus, options, rusage) };
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if (ret as isize) < 0 {
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return Err(SystemError::from_posix_errno(-(ret as isize) as i32)
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.expect("wait4: Invalid errno"));
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return Err(
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SystemError::from_posix_errno((ret as isize) as i32).expect("wait4: Invalid errno")
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);
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}
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return Ok(ret as usize);
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}
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@ -120,6 +120,12 @@ int rm(const char * path);
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*/
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void swab(void *restrict src, void *restrict dest, ssize_t nbytes);
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/**
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* @brief 创建pipe
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* @param fildes 分别是读端fildes[0]和写端fildes[1]
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*/
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int pipe(int fildes[2]);
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pid_t getpid(void);
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int dup(int fd);
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