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| author | Brenda Streiff <brenda.streiff@ni.com> | 2022-01-29 01:01:28 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-23 14:01:06 +0300 |
| commit | 30455322787aee4bb95dcaabdcfcfaab69a1a8f0 (patch) | |
| tree | 22cfb6b1b8c6fe6e1f277b119e2e646a15168693 /scripts/kconfig | |
| parent | e05dde47f52a4a8b027be0fa199d1419b2b4fc3c (diff) | |
| download | linux-30455322787aee4bb95dcaabdcfcfaab69a1a8f0.tar.xz | |
kconfig: let 'shell' return enough output for deep path names
[ Upstream commit 8a4c5b2a6d8ea079fa36034e8167de87ab6f8880 ]
The 'shell' built-in only returns the first 256 bytes of the command's
output. In some cases, 'shell' is used to return a path; by bumping up
the buffer size to 4096 this lets us capture up to PATH_MAX.
The specific case where I ran into this was due to commit 1e860048c53e
("gcc-plugins: simplify GCC plugin-dev capability test"). After this
change, we now use `$(shell,$(CC) -print-file-name=plugin)` to return
a path; if the gcc path is particularly long, then the path ends up
truncated at the 256 byte mark, which makes the HAVE_GCC_PLUGINS
depends test always fail.
Signed-off-by: Brenda Streiff <brenda.streiff@ni.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'scripts/kconfig')
| -rw-r--r-- | scripts/kconfig/preprocess.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/scripts/kconfig/preprocess.c b/scripts/kconfig/preprocess.c index 0590f86df6e4..748da578b418 100644 --- a/scripts/kconfig/preprocess.c +++ b/scripts/kconfig/preprocess.c @@ -141,7 +141,7 @@ static char *do_lineno(int argc, char *argv[]) static char *do_shell(int argc, char *argv[]) { FILE *p; - char buf[256]; + char buf[4096]; char *cmd; size_t nread; int i; |