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VFS: add dupfrom(2) call

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This call copies a file descriptor from a remote process into the
calling process. The call is for the VND driver only, and in the
future, ACLs will prevent any other process from using this call.

Change-Id: Ib16fdd1f1a12cb38a70d7e441dad91bc86898f6d
This commit is contained in:
David van Moolenbroek
2013-09-18 13:55:15 +02:00
committed by Lionel Sambuc
parent 1f8286c377
commit dba2d1f8b4
10 changed files with 85 additions and 6 deletions
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include/lib.h
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@@ -44,6 +44,7 @@ int mapdriver(char *label, int major, int style, int flags);
pid_t getnpid(endpoint_t proc_ep);
uid_t getnuid(endpoint_t proc_ep);
gid_t getngid(endpoint_t proc_ep);
int dupfrom(endpoint_t endpt, int fd);
ssize_t pread64(int fd, void *buf, size_t count, u64_t where);
ssize_t pwrite64(int fd, const void *buf, size_t count, u64_t where);