diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | Src/compat.c | 19 | ||||
| -rw-r--r-- | configure.ac | 30 |
3 files changed, 52 insertions, 3 deletions
@@ -1,3 +1,7 @@ +2010-06-14 Peter Stephenson <pws@csr.com> + + * 28010 + 2010-06-13 Peter Stephenson <p.w.stephenson@ntlworld.com> * Mikael: 28027: Doc/Zsh/expn.yo: typo. @@ -13280,5 +13284,5 @@ ***************************************************** * This is used by the shell to define $ZSH_PATCHLEVEL -* $Revision: 1.5000 $ +* $Revision: 1.5001 $ ***************************************************** diff --git a/Src/compat.c b/Src/compat.c index e72bf6268..e36de3219 100644 --- a/Src/compat.c +++ b/Src/compat.c @@ -420,9 +420,9 @@ zgetdir(struct dirsav *d) /* * Try to find the current directory. + * If we couldn't work it out internally, fall back to getcwd(). * If it fails, fall back to pwd; if zgetcwd() is being used * to set pwd, pwd should be NULL and we just return ".". - * We could fall back to getcwd() instead. */ /**/ @@ -430,6 +430,23 @@ char * zgetcwd(void) { char *ret = zgetdir(NULL); +#ifdef HAVE_GETCWD + if (!ret) { +#ifdef GETCWD_CALLS_MALLOC + char *cwd = getcwd(NULL, 0); + if (cwd) { + ret = dupstring(cwd); + free(cwd); + } +#else + char *cwdbuf = zalloc(PATH_MAX); + ret = getcwd(cwdbuf, PATH_MAX); + if (ret) + ret = dupstring(ret); + free(cwdbuf); +#endif /* GETCWD_CALLS_MALLOC */ + } +#endif /* HAVE_GETCWD */ if (!ret) ret = pwd; if (!ret) diff --git a/configure.ac b/configure.ac index 262fe5d14..a93eb5115 100644 --- a/configure.ac +++ b/configure.ac @@ -1170,7 +1170,7 @@ AC_CHECK_FUNCS(strftime strptime mktime timelocal \ regcomp regexec regerror regfree \ gdbm_open getxattr \ realpath canonicalize_file_name \ - symlink) + symlink getcwd) AC_FUNC_STRCOLL if test x$enable_cap = xyes; then @@ -1898,6 +1898,34 @@ if test x$zsh_cv_use_getcwd = xyes; then AC_DEFINE(USE_GETCWD) fi +dnl GNU getcwd() can allocate as much space as necessary for a +dnl directory name, preventing guessing games. +AH_TEMPLATE([GETCWD_CALLS_MALLOC], +[Define to 1 if getcwd() calls malloc to allocate memory.]) +if test x$ac_cv_func_getcwd = xyes; then + AC_CACHE_CHECK(whether getcwd calls malloc to allocate memory, + zsh_cv_getcwd_malloc, + [AC_TRY_RUN([ +#include <unistd.h> +#include <string.h> +int main() { + char buf[1024], *ptr1, *ptr2; + ptr1 = getcwd(buf, 1024); + ptr2 = getcwd(NULL, 0); + if (ptr1 && ptr2 && !strcmp(ptr1, ptr2)) { + return 0; + } + return 1; +} +], + zsh_cv_getcwd_malloc=yes, + zsh_cv_getcwd_malloc=no, + zsh_cv_getcwd_malloc=no)]) + if test x$zsh_cv_getcwd_malloc = xyes; then + AC_DEFINE(GETCWD_CALLS_MALLOC) + fi +fi + dnl CHECK FOR setproctitle() FOR jobs -Z / ARGV0 AH_TEMPLATE([HAVE_SETPROCTITLE], [Define to 1 if the system supports `setproctitle' to change process name]) |