[OpenAFS-devel] Odd Behavior with 1.4.2fc3

[Jason McCormick]

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Jason McCormick wrote:

> I'm working on a small test case to show this better.

Here's a small program that shows the output of the fstat64() command.
On OpenAFS <= 1.4.1 (tested on 1.2.13 and 1.4.1) st_blksize is always
4096.  On 1.4.2fc4 it's 0.

-- 
Jason McCormick <jasonmc@cert.org>
CERT Infrastructure Group

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#define _D_GNU_SOURCE 1
#define _D_FILE_OFFSET_BITS 64

/* fstat, open */
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>

/* open */
#include <fcntl.h>

/* fprintf */
#include <stdio.h>

int main(int argc, char *argv[]) {
  int fd, ret;
  struct stat stbuf;
  ssize_t nb;

  fprintf(stderr, "about to open %s...\n", argv[1]);

  if ((fd = open(argv[1], O_RDONLY, 0666)) < 0) {
    perror("open");
    return 1;
  }

  fprintf(stderr, "about to open %s...\n", argv[1]);

  if ((ret = fstat(fd, &stbuf)) != 0) {
    perror("write");
    return 2;
  }

  fprintf(stdout, "%0ld\tdev_t         st_dev;      /* device */\n", stbuf.st_dev);
  fprintf(stdout, "%0ld\tino_t         st_ino;      /* inode */\n", stbuf.st_ino);
  fprintf(stdout, "%0ld\tmode_t        st_mode;     /* protection */\n", stbuf.st_mode);
  fprintf(stdout, "%0ld\tnlink_t       st_nlink;    /* number of hard links */\n",stbuf.st_nlink);
  fprintf(stdout, "%0ld\tuid_t         st_uid;      /* user ID of owner */\n", stbuf.st_uid);
  fprintf(stdout, "%0ld\tgid_t         st_gid;      /* group ID of owner */\n", stbuf.st_gid);
  fprintf(stdout, "%0ld\tdev_t         st_rdev;     /* device type (if inode device) */\n", stbuf.st_rdev);
  fprintf(stdout, "%0ld\toff_t         st_size;     /* total size, in bytes */\n", stbuf.st_size);
  fprintf(stdout, "%0ld\tblksize_t     st_blksize;  /* blocksize for filesystem I/O */\n", stbuf.st_blksize);
  fprintf(stdout, "%0ld\tblkcnt_t      st_blocks;   /* number of blocks allocated */\n", stbuf.st_blocks);
  fprintf(stdout, "%0ld\ttime_t        st_atime;    /* time of last access */\n", stbuf.st_atime);
  fprintf(stdout, "%0ld\ttime_t        st_mtime;    /* time of last modification */\n", stbuf.st_mtime);
  fprintf(stdout, "%0ld\ttime_t        st_ctime;    /* time of last status change */\n", stbuf.st_ctime);

  fprintf(stderr, "about to open %s...\n", argv[1]);


  if (close(fd) != 0) {
    perror("close");
    return 3;
  }
}

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