[444] | 1 | /* libc/sys/linux/io.c - Basic input/output system calls */ |
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| 2 | |
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| 3 | /* Written 2000 by Werner Almesberger */ |
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| 4 | |
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| 5 | |
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| 6 | #define __KERNEL_PROTOTYPES |
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| 7 | |
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| 8 | #include <stdarg.h> |
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| 9 | #include <unistd.h> |
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| 10 | #include <fcntl.h> |
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| 11 | #include <sys/types.h> |
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| 12 | #include <sys/uio.h> |
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| 13 | #include <sys/stat.h> |
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| 14 | #include <sys/ioctl.h> |
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| 15 | #include <poll.h> |
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| 16 | #include <machine/syscall.h> |
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| 17 | |
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| 18 | |
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| 19 | #define __NR___ioctl __NR_ioctl |
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| 20 | #define __NR___flock __NR_flock |
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| 21 | #define __NR___mknod __NR_mknod |
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| 22 | |
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| 23 | _syscall3(ssize_t,read,int,fd,void *,buf,size_t,count) |
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| 24 | _syscall3(ssize_t,write,int,fd,const void *,buf,size_t,count) |
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| 25 | _syscall3(int,open,const char *,file,int,flag,mode_t,mode) |
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| 26 | _syscall1(int,close,int,fd) |
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| 27 | _syscall3(off_t,lseek,int,fd,off_t,offset,int,count) |
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| 28 | _syscall0(int,sync) |
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| 29 | _syscall1(int,dup,int,fd) |
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| 30 | _syscall2(int,dup2,int,oldfd,int,newfd) |
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| 31 | _syscall3(int,fcntl,int,fd,int,cmd,long,arg) |
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| 32 | _syscall1(int,fdatasync,int,fd) |
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| 33 | _syscall1(int,fsync,int,fd) |
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| 34 | _syscall3(int,poll,struct pollfd *,fds,nfds_t,nfds,int,timeout) |
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| 35 | |
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| 36 | #if !defined(_ELIX_LEVEL) || _ELIX_LEVEL >= 2 |
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| 37 | _syscall3(ssize_t,readv,int,fd,const struct iovec *,vec,int,count) |
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| 38 | _syscall3(ssize_t,writev,int,fd,const struct iovec *,buf,int,count) |
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| 39 | #endif |
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| 40 | |
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| 41 | #if !defined(_ELIX_LEVEL) || _ELIX_LEVEL >= 4 |
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| 42 | _syscall2(int,ftruncate,int,fd,off_t,len) |
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| 43 | _syscall2(int,truncate,const char *,path,off_t,len) |
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| 44 | #endif |
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| 45 | |
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| 46 | static _syscall3(int,__ioctl,int,fd,int,request,void *,arg) |
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| 47 | |
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| 48 | int ioctl(int fd,int request,...) |
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| 49 | { |
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| 50 | va_list ap; |
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| 51 | int res; |
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| 52 | |
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| 53 | va_start(ap,request); |
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| 54 | res = __ioctl(fd,request,va_arg(ap,void *)); |
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| 55 | va_end(ap); |
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| 56 | return res; |
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| 57 | } |
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| 58 | |
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| 59 | static _syscall2(long,__flock,unsigned int,fd,unsigned int,cmd) |
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| 60 | |
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| 61 | int flock(int fd,int operation) |
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| 62 | { |
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| 63 | return __flock(fd,operation); |
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| 64 | } |
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| 65 | |
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| 66 | #if !defined(_ELIX_LEVEL) || _ELIX_LEVEL >= 3 |
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| 67 | |
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| 68 | static _syscall3(int,__mknod,const char *,path,mode_t,mode,dev_t,dev) |
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| 69 | |
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| 70 | int mkfifo(const char *path, mode_t mode) |
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| 71 | { |
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| 72 | dev_t dev = 0; |
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| 73 | return __mknod(path, mode | S_IFIFO, dev); |
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| 74 | } |
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| 75 | #endif |
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| 76 | |
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| 77 | weak_alias(__libc_close,__close); |
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| 78 | weak_alias(__libc_fcntl,__fcntl); |
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| 79 | weak_alias(__libc_lseek,__lseek); |
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| 80 | weak_alias(__libc_open,__open); |
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| 81 | weak_alias(__libc_read,__read); |
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| 82 | weak_alias(__libc_write,__write); |
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| 83 | weak_alias(__libc_poll,__poll); |
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| 84 | |
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