diff options
Diffstat (limited to 'gnu/usr.bin/cvs/lib/save-cwd.c')
-rw-r--r-- | gnu/usr.bin/cvs/lib/save-cwd.c | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/gnu/usr.bin/cvs/lib/save-cwd.c b/gnu/usr.bin/cvs/lib/save-cwd.c deleted file mode 100644 index 1bdf791..0000000 --- a/gnu/usr.bin/cvs/lib/save-cwd.c +++ /dev/null @@ -1,141 +0,0 @@ -#ifdef HAVE_CONFIG_H -# include "config.h" -#endif - -#include <stdio.h> - -#ifdef STDC_HEADERS -# include <stdlib.h> -#endif - -#ifdef HAVE_UNISTD_H -# include <unistd.h> -#endif - -#ifdef HAVE_FCNTL_H -# include <fcntl.h> -#else -# include <sys/file.h> -#endif - -#ifdef HAVE_DIRECT_H -# include <direct.h> -#endif - -#ifdef HAVE_IO_H -# include <io.h> -#endif - -#include <errno.h> -# ifndef errno -extern int errno; -#endif - -#include "save-cwd.h" -#include "error.h" - -char *xgetwd __PROTO((void)); - -/* Record the location of the current working directory in CWD so that - the program may change to other directories and later use restore_cwd - to return to the recorded location. This function may allocate - space using malloc (via xgetwd) or leave a file descriptor open; - use free_cwd to perform the necessary free or close. Upon failure, - no memory is allocated, any locally opened file descriptors are - closed; return non-zero -- in that case, free_cwd need not be - called, but doing so is ok. Otherwise, return zero. */ - -int -save_cwd (cwd) - struct saved_cwd *cwd; -{ - static int have_working_fchdir = 1; - - cwd->desc = -1; - cwd->name = NULL; - - if (have_working_fchdir) - { -#ifdef HAVE_FCHDIR - cwd->desc = open (".", O_RDONLY); - if (cwd->desc < 0) - { - error (0, errno, "cannot open current directory"); - return 1; - } - -# if __sun__ || sun - /* On SunOS 4, fchdir returns EINVAL if accounting is enabled, - so we have to fall back to chdir. */ - if (fchdir (cwd->desc)) - { - if (errno == EINVAL) - { - close (cwd->desc); - cwd->desc = -1; - have_working_fchdir = 0; - } - else - { - error (0, errno, "current directory"); - close (cwd->desc); - cwd->desc = -1; - return 1; - } - } -# endif /* __sun__ || sun */ -#else -#define fchdir(x) (abort (), 0) - have_working_fchdir = 0; -#endif - } - - if (!have_working_fchdir) - { - cwd->name = xgetwd (); - if (cwd->name == NULL) - { - error (0, errno, "cannot get current directory"); - return 1; - } - } - return 0; -} - -/* Change to recorded location, CWD, in directory hierarchy. - If "saved working directory", NULL)) - */ - -int -restore_cwd (cwd, dest) - const struct saved_cwd *cwd; - const char *dest; -{ - int fail = 0; - if (cwd->desc >= 0) - { - if (fchdir (cwd->desc)) - { - error (0, errno, "cannot return to %s", - (dest ? dest : "saved working directory")); - fail = 1; - } - } - else if (chdir (cwd->name) < 0) - { - error (0, errno, "%s", cwd->name); - fail = 1; - } - return fail; -} - -void -free_cwd (cwd) - struct saved_cwd *cwd; -{ - if (cwd->desc >= 0) - close (cwd->desc); - if (cwd->name) - free (cwd->name); -} - |