VFS functions

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Hi,

I want understand the flow of write operations in Linux.

Do all application or glibc calls to write pass through the kernel call
sys_write() (in fs/read_write.c)? What about
- do_sync_write
- vfs_write
- sys_write
- sys_pwrite64 (calls vfs_write)
- vfs_writev
- sys_writev
- do_readv_writev


Do all file operations pass through sys_open in fs/open.c? Basically, if I
wanted to track which file is opened (for read/write/exec), would sys_open
be the function to watch?

Thanks,

Siddhartha


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