[PATCH] build: prohibit realpath() by syntax-check

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From: Michal Privoznik <mprivozn@xxxxxxxxxx>

We have virFileCanonicalizePath() which calls realpath() but
also is present in our mocks (in contrast to realpath()).
Introduce a syntax-check rule to enforce use of our wrapper.

Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx>
---
 build-aux/syntax-check.mk | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/build-aux/syntax-check.mk b/build-aux/syntax-check.mk
index 1303a0ce7e..27eabe6565 100644
--- a/build-aux/syntax-check.mk
+++ b/build-aux/syntax-check.mk
@@ -247,6 +247,12 @@ sc_prohibit_canonicalize_file_name:
 	halt='use virFileCanonicalizePath() instead of canonicalize_file_name()' \
 	  $(_sc_search_regexp)
 
+sc_prohibit_realpath:
+	@prohibit='\<realpath\(' \
+	exclude='exempt from syntax-check' \
+	halt='use virFileCanonicalizePath() instead of realpath()' \
+	  $(_sc_search_regexp)
+
 # qsort from glibc has unstable sort ordering for "equal" members
 sc_prohibit_qsort:
 	@prohibit='\<(qsort|qsort_r) *\(' \
@@ -1420,6 +1426,9 @@ exclude_file_name_regexp--sc_prohibit_nonreentrant = \
 exclude_file_name_regexp--sc_prohibit_canonicalize_file_name = \
   ^(build-aux/syntax-check\.mk|tests/virfilemock\.c)$$
 
+exclude_file_name_regexp--sc_prohibit_realpath = \
+  ^(build-aux/syntax-check\.mk|src/cpu_map/sync_qemu_features_i386\.py|tests/virfilemock\.c)$$
+
 exclude_file_name_regexp--sc_prohibit_raw_allocation = \
   ^(docs/advanced-tests\.rst|src/util/viralloc\.[ch]|examples/.*|tests/(securityselinuxhelper|(vircgroup|nss)mock|commandhelper)\.c|tools/wireshark/src/packet-libvirt\.c|tools/nss/libvirt_nss(_leases|_macs)?\.[ch])$$
 
-- 
2.49.0




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