mirror of
https://github.com/ioacademy-jikim/debugging
synced 2025-06-08 08:26:14 +00:00
42 lines
690 B
C
42 lines
690 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <sys/syscall.h>
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#include <unistd.h>
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#include <fcntl.h>
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#ifndef SYS___pthread_chdir
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# define SYS___pthread_chdir 348
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#endif
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#ifndef SYS___pthread_fchdir
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# define SYS___pthread_fchdir 349
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#endif
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int __pthread_chdir(const char *path)
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{
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return syscall(SYS___pthread_chdir, path);
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}
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int __pthread_fchdir(int dirfd)
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{
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return syscall(SYS___pthread_fchdir, dirfd);
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}
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int main(void)
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{
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int dirfd;
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dirfd = open("/", O_RDONLY);
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if (dirfd == -1)
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perror("open"), exit(1);
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if (__pthread_chdir("/"))
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perror("__pthread_chdir");
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if (__pthread_fchdir(dirfd))
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perror("__pthread_fchdir");
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return 0;
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}
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