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syscalls: Use 'syscall->procedure' everywhere.

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* guix/build/syscalls.scm (mkdtemp!, setns, %ioctl, network-interfaces):
(free-ifaddrs): Use 'syscall->procedure'.
This commit is contained in:
Ludovic Courtès 2016-06-13 17:57:25 +02:00
parent 1752a17a1e
commit d1f33ba44b
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GPG Key ID: 090B11993D9AEBB5
1 changed files with 5 additions and 11 deletions
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guix/build/syscalls.scm
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@ -494,8 +494,7 @@ user-land process."
<))
(define mkdtemp!
(let* ((ptr (dynamic-func "mkdtemp" (dynamic-link)))
(proc (pointer->procedure '* ptr '(*))))
(let ((proc (syscall->procedure '* "mkdtemp" '(*))))
(lambda (tmpl)
"Create a new unique directory in the file system using the template
string TMPL and return its file name. TMPL must end with 'XXXXXX'."
@ -626,8 +625,7 @@ are shared between the parent and child processes."
;; Some systems may be using an old (pre-2.14) version of glibc where there
;; is no 'setns' function available.
(false-if-exception
(let* ((ptr (dynamic-func "setns" (dynamic-link)))
(proc (pointer->procedure int ptr (list int int))))
(let ((proc (syscall->procedure int "setns" (list int int))))
(lambda (fdes nstype)
"Reassociate the current process with the namespace specified by FDES, a
file descriptor obtained by opening a /proc/PID/ns/* file. NSTYPE specifies
@ -833,9 +831,7 @@ bytevector BV at INDEX."
(define %ioctl
;; The most terrible interface, live from Scheme.
(pointer->procedure int
(dynamic-func "ioctl" (dynamic-link))
(list int unsigned-long '*)))
(syscall->procedure int "ioctl" (list int unsigned-long '*)))
(define (bytevector->string-list bv stride len)
"Return the null-terminated strings found in BV every STRIDE bytes. Read at
@ -1075,8 +1071,7 @@ return the list of resulting <interface> objects."
(loop ptr (cons ifaddr result)))))))
(define network-interfaces
(let* ((ptr (dynamic-func "getifaddrs" (dynamic-link)))
(proc (pointer->procedure int ptr (list '*))))
(let ((proc (syscall->procedure int "getifaddrs" (list '*))))
(lambda ()
"Return a list of <interface> objects, each denoting a configured
network interface. This is implemented using the 'getifaddrs' libc function."
@ -1093,8 +1088,7 @@ network interface. This is implemented using the 'getifaddrs' libc function."
(list err)))))))
(define free-ifaddrs
(let ((ptr (dynamic-func "freeifaddrs" (dynamic-link))))
(pointer->procedure void ptr '(*))))
(syscall->procedure void "freeifaddrs" '(*)))
;;;