#include <string.h>
#include <ctype.h>
#include <unistd.h>
+#include <errno.h>
+#include <limits.h>
+#include <fcntl.h>
+
#ifndef LISP_FEATURE_WIN32
#include <pwd.h>
#include <sys/wait.h>
#endif
#include <stdio.h>
+#if defined(LISP_FEATURE_WIN32)
+#define WIN32_LEAN_AND_MEAN
+#include <errno.h>
+#endif
+
#include "runtime.h"
#include "util.h"
+#include "wrap.h"
/* Although it might seem as though this should be in some standard
Unix header, according to Perry E. Metzger, in a message on
#endif
\f
/*
- * stat(2) stuff
+ * realpath(3), including a wrapper for Windows.
*/
-
-/* As of 0.6.12, the FFI can't handle 64-bit values. For now, we use
- * these munged-to-32-bits values for might-be-64-bit slots of
- * stat_wrapper as a workaround, so that at least we can still work
- * when values are small.
- *
- * FIXME: But of course we should fix the FFI so that we can use the
- * actual 64-bit values instead. In fact, we probably have by now
- * (2003-10-03) on all working platforms except MIPS and HPPA; if some
- * motivated spark would simply fix those, this hack could go away.
- * -- CSR, 2003-10-03
- *
- * Some motivated spark fixed MIPS. -- ths, 2005-10-06 */
-
-#ifdef LISP_FEATURE_MIPS
-typedef unsigned long ffi_dev_t; /* Linux/MIPS struct stat doesn't use dev_t */
-typedef off_t ffi_off_t;
-#else
-typedef u32 ffi_dev_t; /* since Linux dev_t can be 64 bits */
-typedef u32 ffi_off_t; /* since OpenBSD 2.8 st_size is 64 bits */
-#endif
-
-/* a representation of stat(2) results which doesn't depend on CPU or OS */
-struct stat_wrapper {
- /* KLUDGE: The verbose wrapped_st_ prefixes are to protect us from
- * the C preprocessor as wielded by the fiends of OpenBSD, who do
- * things like
- * #define st_atime st_atimespec.tv_sec
- * I remember when I was young and innocent, I read about how the
- * C preprocessor isn't to be used to globally munge random
- * lowercase symbols like this, because things like this could
- * happen, and I nodded sagely. But now I know better.:-| This is
- * another entry for Dan Barlow's ongoing episodic rant about C
- * header files, I guess.. -- WHN 2001-05-10 */
- ffi_dev_t wrapped_st_dev; /* device */
- ino_t wrapped_st_ino; /* inode */
- mode_t wrapped_st_mode; /* protection */
+char * sb_realpath (char *path)
+{
#ifndef LISP_FEATURE_WIN32
- nlink_t wrapped_st_nlink; /* number of hard links */
- uid_t wrapped_st_uid; /* user ID of owner */
- gid_t wrapped_st_gid; /* group ID of owner */
+ char *ret;
+ int errnum;
+
+ if ((ret = calloc(PATH_MAX, sizeof(char))) == NULL)
+ return NULL;
+ if (realpath(path, ret) == NULL) {
+ errnum = errno;
+ free(ret);
+ errno = errnum;
+ return NULL;
+ }
+ return(ret);
#else
- short wrapped_st_nlink; /* Win32 doesn't have nlink_t */
- short wrapped_st_uid; /* Win32 doesn't have st_uid */
- short wrapped_st_gid; /* Win32 doesn't have st_gid */
+ char *ret;
+ char *cp;
+ int errnum;
+
+ if ((ret = calloc(MAX_PATH, sizeof(char))) == NULL)
+ return NULL;
+ if (GetFullPathName(path, MAX_PATH, ret, cp) == 0) {
+ errnum = errno;
+ free(ret);
+ errno = errnum;
+ return NULL;
+ }
+ return(ret);
#endif
- ffi_dev_t wrapped_st_rdev; /* device type (if inode device) */
- ffi_off_t wrapped_st_size; /* total size, in bytes */
- unsigned long wrapped_st_blksize; /* blocksize for filesystem I/O */
- unsigned long wrapped_st_blocks; /* number of blocks allocated */
- time_t wrapped_st_atime; /* time_t of last access */
- time_t wrapped_st_mtime; /* time_t of last modification */
- time_t wrapped_st_ctime; /* time_t of last change */
-};
+}
+\f
+/*
+ * stat(2) stuff
+ */
static void
copy_to_stat_wrapper(struct stat_wrapper *to, struct stat *from)
return ret;
}
\f
+/* A wrapper for mkstemp(3), for two reasons: (1) mkstemp does not
+ exist on Windows; (2) by passing down a mode_t, we don't need a
+ binding to chmod in SB-UNIX, and need not concern ourselves with
+ umask issues if we want to use mkstemp to make new files in
+ OPEN. */
+int sb_mkstemp (char *template, mode_t mode) {
+#ifdef LISP_FEATURE_WIN32
+#define PATHNAME_BUFFER_SIZE MAX_PATH
+#define MKTEMP _mktemp
+#else
+#define PATHNAME_BUFFER_SIZE PATH_MAX
+#define MKTEMP mktemp
+#endif
+ int fd;
+ char buf[PATHNAME_BUFFER_SIZE];
+
+ while (1) {
+ /* Fruit fallen from the tree: for people who like
+ microoptimizations, we might not need to copy the whole
+ template on every loop, but only the last several characters.
+ But I didn't feel like testing the boundary cases in Windows's
+ _mktemp. */
+ strncpy(buf, template, PATHNAME_BUFFER_SIZE);
+ buf[PATHNAME_BUFFER_SIZE-1]=0; /* force NULL-termination */
+ if (MKTEMP(buf)) {
+ if ((fd=open(buf, O_CREAT|O_EXCL|O_RDWR, mode))!=-1) {
+ strcpy(template, buf);
+ return (fd);
+ } else
+ if (errno != EEXIST)
+ return (-1);
+ } else
+ return (-1);
+ }
+#undef MKTEMP
+#undef PATHNAME_BUFFER_SIZE
+}
+
+\f
/*
* getpwuid() stuff
*/
} else {
char *result = malloc(len + 2);
if (result) {
- int nchars = sprintf(result,"%s/",p->pw_dir);
+ unsigned int nchars = sprintf(result,"%s/",p->pw_dir);
if (nchars == len + 1) {
return result;
} else {
}
#ifdef LISP_FEATURE_WIN32
-#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <time.h>
/*
projects / sbcl.git / blobdiff