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authorDavid Thompson <davet@gnu.org>2015-06-24 20:50:34 -0400
committerDavid Thompson <dthompson2@worcester.edu>2015-07-07 18:46:44 -0400
commitb4abdeb63b4e29f89a0a8e54f7b442bb31da87c9 (patch)
tree31b46689ab9160a91c635a4ec248c4b0334e55fc /guix
parentb16d138a0af44740894ecd42eca4d71fd74aea1a (diff)
build: syscalls: Add mkdtemp!
* guix/build/syscalls.scm (mkdtemp!): New procedure. * tests/syscalls.scm ("mkdtemp!"): New test.
Diffstat (limited to 'guix')
-rw-r--r--guix/build/syscalls.scm15
1 files changed, 15 insertions, 0 deletions
diff --git a/guix/build/syscalls.scm b/guix/build/syscalls.scm
index 6d3151051b..a464040e56 100644
--- a/guix/build/syscalls.scm
+++ b/guix/build/syscalls.scm
@@ -45,6 +45,7 @@
swapon
swapoff
processes
+ mkdtemp!
IFF_UP
IFF_BROADCAST
@@ -265,6 +266,20 @@ user-land process."
(scandir "/proc"))
<))
+(define mkdtemp!
+ (let* ((ptr (dynamic-func "mkdtemp" (dynamic-link)))
+ (proc (pointer->procedure '* ptr '(*))))
+ (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'."
+ (let ((result (proc (string->pointer tmpl)))
+ (err (errno)))
+ (when (null-pointer? result)
+ (throw 'system-error "mkdtemp!" "~S: ~A"
+ (list tmpl (strerror err))
+ (list err)))
+ (pointer->string result)))))
+
;;;
;;; Packed structures.