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| author | Jan (janneke) Nieuwenhuizen <janneke@gnu.org> | 2020-05-13 22:49:54 +0200 |
|---|---|---|
| committer | Jan Nieuwenhuizen <janneke@gnu.org> | 2020-05-13 23:26:06 +0200 |
| commit | d155c9d93496ae620829fbc33b5694e74cda9683 (patch) | |
| tree | 80d2642ca3f7c94acd8214f2ef8979437bedb5a3 | |
| parent | e792dd3244621579b25d146b6fe9cdbac60a222c (diff) | |
| download | guix-d155c9d93496ae620829fbc33b5694e74cda9683.tar.gz guix-d155c9d93496ae620829fbc33b5694e74cda9683.zip | |
syscalls: Add 'setxattr'.
* guix/build/syscalls.scm (setxattr): New procedure.
Co-authored-by: Ludovic Courtès <ludo@gnu.org>
| -rw-r--r-- | guix/build/syscalls.scm | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/guix/build/syscalls.scm b/guix/build/syscalls.scm index 4ee2b97e76..3bb4545c04 100644 --- a/guix/build/syscalls.scm +++ b/guix/build/syscalls.scm @@ -79,6 +79,7 @@ fdatasync pivot-root scandir* + setxattr fcntl-flock lock-file @@ -723,6 +724,23 @@ backend device." (list (strerror err)) (list err)))))) +(define setxattr + (let ((proc (syscall->procedure int "setxattr" + `(* * * ,size_t ,int)))) + (lambda* (file key value #:optional (flags 0)) + "Set extended attribute KEY to VALUE on FILE." + (let*-values (((bv) (string->utf8 value)) + ((ret err) + (proc (string->pointer/utf-8 file) + (string->pointer key) + (bytevector->pointer bv) + (bytevector-length bv) + flags))) + (unless (zero? ret) + (throw 'system-error "setxattr" "~S: ~A" + (list file key value (strerror err)) + (list err))))))) + ;;; ;;; Random. |