diff options
| -rw-r--r-- | guix/build/syscalls.scm | 67 |
1 files changed, 66 insertions, 1 deletions
diff --git a/guix/build/syscalls.scm b/guix/build/syscalls.scm index 552343a481..6ed11a0d69 100644 --- a/guix/build/syscalls.scm +++ b/guix/build/syscalls.scm @@ -82,6 +82,21 @@ 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 @@ -754,6 +769,56 @@ 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 +834,7 @@ 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 |