diff options
Diffstat (limited to 'guix/build/syscalls.scm')
| -rw-r--r-- | guix/build/syscalls.scm | 78 |
1 files changed, 75 insertions, 3 deletions
diff --git a/guix/build/syscalls.scm b/guix/build/syscalls.scm index 552343a481..8886fc0fb9 100644 --- a/guix/build/syscalls.scm +++ b/guix/build/syscalls.scm @@ -6,6 +6,7 @@ ;;; Copyright © 2019 Guillaume Le Vaillant <glv@posteo.net> ;;; Copyright © 2020 Julien Lepiller <julien@lepiller.eu> ;;; Copyright © 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org> +;;; Copyright © 2021 Chris Marusich <cmmarusich@gmail.com> ;;; ;;; This file is part of GNU Guix. ;;; @@ -82,6 +83,21 @@ file-system-fragment-size file-system-mount-flags statfs + + ST_RDONLY + ST_NOSUID + ST_NODEV + ST_NOEXEC + ST_SYNCHRONOUS + ST_MANDLOCK + ST_WRITE + ST_APPEND + ST_IMMUTABLE + ST_NOATIME + ST_NODIRATIME + ST_RELATIME + statfs-flags->mount-flags + free-disk-space device-in-use? add-to-entropy-count @@ -621,8 +637,9 @@ current process." (if (eof-object? line) (reverse result) (match (string-tokenize line) + ;; See the proc(5) man page for a description of the columns. ((id parent-id major:minor root mount-point - options _ type source _ ...) + options _ ... "-" type source _) (let ((devno (string->device-number major:minor))) (loop (cons (%mount (octal-decode source) (octal-decode mount-point) @@ -754,6 +771,56 @@ fdatasync(2) on the underlying file descriptor." (define-syntax fsword ;fsword_t (identifier-syntax long)) +(define linux? (string-contains %host-type "linux-gnu")) + +(define-syntax define-statfs-flags + (syntax-rules (linux hurd) + "Define the statfs mount flags." + ((_ (name (linux linux-value) (hurd hurd-value)) rest ...) + (begin + (define name + (if linux? linux-value hurd-value)) + (define-statfs-flags rest ...))) + ((_ (name value) rest ...) + (begin + (define name value) + (define-statfs-flags rest ...))) + ((_) #t))) + +(define-statfs-flags ;<bits/statfs.h> + (ST_RDONLY 1) + (ST_NOSUID 2) + (ST_NODEV (linux 4) (hurd 0)) + (ST_NOEXEC 8) + (ST_SYNCHRONOUS 16) + (ST_MANDLOCK (linux 64) (hurd 0)) + (ST_WRITE (linux 128) (hurd 0)) + (ST_APPEND (linux 256) (hurd 0)) + (ST_IMMUTABLE (linux 512) (hurd 0)) + (ST_NOATIME (linux 1024) (hurd 32)) + (ST_NODIRATIME (linux 2048) (hurd 0)) + (ST_RELATIME (linux 4096) (hurd 64))) + +(define (statfs-flags->mount-flags flags) + "Convert FLAGS, a logical or of ST_* constants as returned by +'file-system-mount-flags', to the corresponding logical or of MS_* constants." + (letrec-syntax ((match-flags (syntax-rules (=>) + ((_ (statfs => mount) rest ...) + (logior (if (zero? (logand flags statfs)) + 0 + mount) + (match-flags rest ...))) + ((_) + 0)))) + (match-flags + (ST_RDONLY => MS_RDONLY) + (ST_NOSUID => MS_NOSUID) + (ST_NODEV => MS_NODEV) + (ST_NOEXEC => MS_NOEXEC) + (ST_NOATIME => MS_NOATIME) + (ST_NODIRATIME => 0) ;FIXME + (ST_RELATIME => MS_RELATIME)))) + (define-c-struct %statfs ;<bits/statfs.h> sizeof-statfs ;slightly overestimated file-system @@ -769,7 +836,7 @@ fdatasync(2) on the underlying file descriptor." (identifier (array int 2)) (name-length fsword) (fragment-size fsword) - (mount-flags fsword) + (mount-flags fsword) ;ST_* (spare (array fsword 4))) (define statfs @@ -876,7 +943,11 @@ backend device." ;;; ;; From <uapi/linux/random.h>. -(define RNDADDTOENTCNT #x40045201) +(define RNDADDTOENTCNT + ;; Avoid using %current-system here to avoid depending on host-side code. + (if (string-prefix? "powerpc64le" %host-type) + #x80045201 + #x40045201)) (define (add-to-entropy-count port-or-fd n) "Add N to the kernel's entropy count (the value that can be read from @@ -955,6 +1026,7 @@ Turning finalization off shuts down the finalization thread as a side effect." ("mips64" 5055) ("armv7l" 120) ("aarch64" 220) + ("ppc64le" 120) (_ #f)))) (lambda (flags) "Create a new child process by duplicating the current parent process. |