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| author | James Knight <james.knight@rockwellcollins.com> | 2015-09-03 11:00:09 -0400 |
|---|---|---|
| committer | Peter Korsgaard <peter@korsgaard.com> | 2015-09-04 16:45:42 +0200 |
| commit | 0610de14901e5ad0f6c9b4db488477db47d2ff57 (patch) | |
| tree | 8d64f8719536d255ceeef5d8f65adeca59c2e2a0 /package/bash | |
| parent | 38d1a66bda57cb4c47156021ee976c2583b55822 (diff) | |
| download | buildroot-0610de14901e5ad0f6c9b4db488477db47d2ff57.tar.gz buildroot-0610de14901e5ad0f6c9b4db488477db47d2ff57.zip | |
package/bash: indicate getcwd is malloc-supported
When Bash attempts to find the current working directory, it uses a C
library call `getcwd` to resolve it. When cross-compiling, the
configuration process cannot determine if the target system's C library
can support an "unfixed" path length. Therefore, Bash will fallback to a
size of `PATH_MAX` for determining the current working directory. When
using OverlayFS (and possible other file systems), this becomes an issue
since file paths can commonly exceed standard `PATH_MAX` length. This
typically results in the following error appearing:
error retrieving current directory: [...]
Common C library `getcwd` calls can default to a higher limit (usually
the system's page size). The current configurable C libraries (as of at
least 2015.08) support a zero (0) size buffer length. Most use the
system's page size; musl, being an exception, which defaults to
`PATH_MAX` (as Bash was doing). Since these C libraries support
allocating buffer space with a zero (0) provided size, the following
configuration change allows Bash to support getting a larger-length'ed
working directory on target's that support it.
Signed-off-by: James Knight <james.knight@rockwellcollins.com>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Diffstat (limited to 'package/bash')
| -rw-r--r-- | package/bash/bash.mk | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/package/bash/bash.mk b/package/bash/bash.mk index 9865e1971d..97d7182e2f 100644 --- a/package/bash/bash.mk +++ b/package/bash/bash.mk @@ -16,6 +16,7 @@ BASH_LICENSE_FILES = COPYING BASH_CONF_ENV += \ ac_cv_rl_prefix="$(STAGING_DIR)" \ ac_cv_rl_version="$(READLINE_VERSION)" \ + bash_cv_getcwd_malloc=yes \ bash_cv_job_control_missing=present \ bash_cv_sys_named_pipes=present \ bash_cv_func_sigsetjmp=present \ |
