36 lines
1.3 KiB
C
36 lines
1.3 KiB
C
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/*
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* datasize.c -- print the size of common data items
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* This runs with any Linux kernel (not any Unix, because of <linux/types.h>)
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*
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* Copyright (C) 2001 Alessandro Rubini and Jonathan Corbet
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* Copyright (C) 2001 O'Reilly & Associates
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*
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* The source code in this file can be freely used, adapted,
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* and redistributed in source or binary form, so long as an
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* acknowledgment appears in derived source files. The citation
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* should list that the code comes from the book "Linux Device
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* Drivers" by Alessandro Rubini and Jonathan Corbet, published
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* by O'Reilly & Associates. No warranty is attached;
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* we cannot take responsibility for errors or fitness for use.
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*/
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#include <stdio.h>
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#include <sys/utsname.h>
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#include <linux/types.h>
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int main(int argc, char **argv)
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{
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struct utsname name;
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uname(&name); /* never fails :) */
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printf("arch Size: char short int long ptr long-long "
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" u8 u16 u32 u64\n");
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printf( "%-12s %3i %3i %3i %3i %3i %3i "
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"%3i %3i %3i %3i\n",
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name.machine,
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(int)sizeof(char), (int)sizeof(short), (int)sizeof(int),
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(int)sizeof(long),
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(int)sizeof(void *), (int)sizeof(long long), (int)sizeof(__u8),
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(int)sizeof(__u16), (int)sizeof(__u32), (int)sizeof(__u64));
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return 0;
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}
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