diff options
| -rw-r--r-- | guix/build/gremlin.scm | 41 | ||||
| -rw-r--r-- | tests/gremlin.scm | 36 |
2 files changed, 77 insertions, 0 deletions
diff --git a/guix/build/gremlin.scm b/guix/build/gremlin.scm index 44604827a9..a2d2169ddc 100644 --- a/guix/build/gremlin.scm +++ b/guix/build/gremlin.scm @@ -44,6 +44,7 @@ file-dynamic-info file-runpath file-needed + file-needed/recursive missing-runpath-error? missing-runpath-error-file @@ -259,6 +260,46 @@ FILE lacks dynamic info." dynamic info." (and=> (file-dynamic-info file) elf-dynamic-info-needed)) +(define (file-needed/recursive file) + "Return two values: the list of absolute .so file names FILE depends on, +recursively, and the list of .so file names that could not be found. File +names are resolved by searching the RUNPATH of the file that NEEDs them. + +This is similar to the info returned by the 'ldd' command." + (let loop ((files (list file)) + (result '()) + (not-found '())) + (match files + (() + (values (reverse result) + (reverse (delete-duplicates not-found)))) + ((file . rest) + (match (file-dynamic-info file) + (#f + (loop rest result not-found)) + (info + (let ((runpath (elf-dynamic-info-runpath info)) + (needed (elf-dynamic-info-needed info))) + (if (and runpath needed) + (let* ((runpath (map (cute expand-origin <> (dirname file)) + runpath)) + (resolved (map (cut search-path runpath <>) + needed)) + (failed (filter-map (lambda (needed resolved) + (and (not resolved) + (not (libc-library? needed)) + needed)) + needed resolved)) + (needed (remove (lambda (value) + (or (not value) + ;; XXX: quadratic + (member value result))) + resolved))) + (loop (append rest needed) + (append needed result) + (append failed not-found))) + (loop rest result not-found))))))))) + (define %libc-libraries ;; List of libraries as of glibc 2.21 (there are more but those are ;; typically mean to be LD_PRELOADed and thus do not appear as NEEDED.) diff --git a/tests/gremlin.scm b/tests/gremlin.scm index f191adb8b3..9ddac14265 100644 --- a/tests/gremlin.scm +++ b/tests/gremlin.scm @@ -27,6 +27,8 @@ #:use-module (srfi srfi-64) #:use-module (rnrs io ports) #:use-module (ice-9 popen) + #:use-module (ice-9 rdelim) + #:use-module (ice-9 regex) #:use-module (ice-9 match)) (define %guile-executable @@ -58,6 +60,40 @@ (string-take lib (string-contains lib ".so"))) (elf-dynamic-info-needed dyninfo)))))) +(unless (and %guile-executable (not (getenv "LD_LIBRARY_PATH")) + (file-needed %guile-executable)) ;statically linked? + (test-skip 1)) +(test-assert "file-needed/recursive" + (let* ((needed (file-needed/recursive %guile-executable)) + (pipe (dynamic-wind + (lambda () + ;; Tell ld.so to list loaded objects, like 'ldd' does. + (setenv "LD_TRACE_LOADED_OBJECTS" "yup")) + (lambda () + (open-pipe* OPEN_READ %guile-executable)) + (lambda () + (unsetenv "LD_TRACE_LOADED_OBJECTS"))))) + (define ldd-rx + (make-regexp "^[[:blank:]]+([[:graph:]]+ => )?([[:graph:]]+) .*$")) + + (define (read-ldd-output port) + ;; Read from PORT output in GNU ldd format. + (let loop ((result '())) + (match (read-line port) + ((? eof-object?) + (reverse result)) + ((= (cut regexp-exec ldd-rx <>) m) + (if m + (loop (cons (match:substring m 2) result)) + (loop result)))))) + + (define ground-truth + (remove (cut string-prefix? "linux-vdso.so" <>) + (read-ldd-output pipe))) + + (and (zero? (close-pipe pipe)) + (lset= string=? (pk 'truth ground-truth) (pk 'needed needed))))) + (test-equal "expand-origin" '("OOO/../lib" "OOO" |