>The results are:
>
>$ sudo dtrace -s process_filesize.d -c ./stat
>Path: /home/triddel/stat.c
>File mode: 63676
>File size: 0
>File inode: 0
>File uid: 33188
>File fstype:
>
>File size is definitely not zero, and nor is the inode. Clearly the
>technique is working for the file path but it seems I'm doing
>something incorrect when accessing members of the stat64 struct.
>
>Can someone point me to what I'm doing wrong?
There are three different stat structures in the kernel:
- stat32
- stat64 (native)
- stat64_32 (for 32 bit large file environment)
*stat64 returns the latter and the differences are:
> ::print -a "struct stat64"
0 {
0 st_dev
8 st_ino
10 st_mode
14 st_nlink
18 st_uid
1c st_gid
20 st_rdev
28 st_size
30 st_atim {
30 tv_sec
38 tv_nsec
}
40 st_mtim {
40 tv_sec
48 tv_nsec
}
50 st_ctim {
50 tv_sec
58 tv_nsec
}
60 st_blksize
68 st_blocks
70 st_fstype
}
> ::print -a "struct stat64_32"
0 {
0 st_dev
4 st_pad1
10 st_ino
18 st_mode
1c st_nlink
20 st_uid
24 st_gid
28 st_rdev
2c st_pad2
38 st_size
40 st_atim {
40 tv_sec
44 tv_nsec
}
48 st_mtim {
48 tv_sec
4c tv_nsec
}
50 st_ctim {
50 tv_sec
54 tv_nsec
}
58 st_blksize
60 st_blocks
68 st_fstype
78 st_pad4
}
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