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.Dd May 11, 2016 .Dt PR_GETPEERNAME 3PROC .Os .Sh NAME .Nm pr_getpeername .Nd inject getpeername library call into victim process .Sh SYNOPSIS .Lb libproc n libproc.h .Ft int .Fo pr_getpeername .Fa "struct ps_prochandle *P" .Fa "int sock" .Fa "struct sockaddr *name" .Fa "socklen_t *namelen" .Fc .Sh DESCRIPTION The .Fn pr_getpeername function injects the .Xr getpeername 3SOCKET library call into the target process .Fa P by means of the agent LWP. If the process handle .Fa P is .Dv NULL then this is equivalent to calling .Xr getpeername 3SOCKET on the currently running process.
p The arguments .Fa sock , .Fa name , and .Fa namelen have the same meaning as in .Xr getpeername 3SOCKET . See .Xr getpeername 3SOCKET for the full description and purpose of the .Sy getpeername library call and its arguments.
p The .Fn pr_getpeername function only works on active processes. Process handles that correspond to core files, zombie processes, or ELF objects do not support library call injection. .Sh RETURN VALUES Upon successful completion, the .Fn pr_getpeername function's return value is that described in .Xr getpeername 3SOCKET . Otherwise, .Sy -1 is returned and .Sy errno is set to .Er ENOSYS to indicate that the library call could not be injected. .Sh ERRORS For the full list of errors see the .Sy ERRORS section in .Xr getpeername 3SOCKET .
p The .Fn pr_getpeername function will fail if: l -tag -width Er t Er ENOSYS An error occurred while trying to invoke the agent LWP and inject a library call in the process handle .Fa P or the process handle .Fa P does not support library call injection. .El .Sh INTERFACE STABILITY .Sy Uncommitted .Sh MT-LEVEL See .Sy LOCKING in .Xr libproc 3LIB . .Sh SEE ALSO .Xr libproc 3LIB , .Xr getpeername 3SOCKET , .Xr proc 4