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-rw-r--r--source4/ntvfs/posix/pvfs_sys.c26
1 files changed, 22 insertions, 4 deletions
diff --git a/source4/ntvfs/posix/pvfs_sys.c b/source4/ntvfs/posix/pvfs_sys.c
index 178530775f..f110590153 100644
--- a/source4/ntvfs/posix/pvfs_sys.c
+++ b/source4/ntvfs/posix/pvfs_sys.c
@@ -42,6 +42,24 @@ struct pvfs_sys_ctx {
struct stat st_orig;
};
+
+/*
+ we create PVFS_NOFOLLOW and PVFS_DIRECTORY as aliases for O_NOFOLLOW
+ and O_DIRECTORY on systems that have them. On systems that don't
+ have O_NOFOLLOW we are less safe, but the root override code is off
+ by default.
+ */
+#ifdef O_NOFOLLOW
+#define PVFS_NOFOLLOW O_NOFOLLOW
+#else
+#define PVFS_NOFOLLOW 0
+#endif
+#ifdef O_DIRECTORY
+#define PVFS_DIRECTORY O_DIRECTORY
+#else
+#define PVFS_DIRECTORY 0
+#endif
+
/*
return to original directory when context is destroyed
*/
@@ -97,7 +115,7 @@ static int pvfs_sys_chdir_nosymlink(struct pvfs_sys_ctx *ctx, const char *pathna
int fd;
struct stat st1, st2;
*p = 0;
- fd = open(path, O_NOFOLLOW | O_DIRECTORY | O_RDONLY);
+ fd = open(path, PVFS_NOFOLLOW | PVFS_DIRECTORY | O_RDONLY);
if (fd == -1) {
return -1;
}
@@ -225,7 +243,7 @@ static int pvfs_sys_chown(struct pvfs_state *pvfs, struct pvfs_sys_ctx *ctx, con
{
/* to avoid symlink hacks, we need to use fchown() on a directory fd */
int ret, fd;
- fd = open(name, O_DIRECTORY | O_NOFOLLOW | O_RDONLY);
+ fd = open(name, PVFS_DIRECTORY | PVFS_NOFOLLOW | O_RDONLY);
if (fd == -1) {
return -1;
}
@@ -262,7 +280,7 @@ int pvfs_sys_open(struct pvfs_state *pvfs, const char *filename, int flags, mode
}
/* don't allow permission overrides to follow links */
- flags |= O_NOFOLLOW;
+ flags |= PVFS_NOFOLLOW;
/*
if O_CREAT was specified and O_EXCL was not specified
@@ -386,7 +404,7 @@ int pvfs_sys_unlink(struct pvfs_state *pvfs, const char *filename)
static bool contains_symlink(const char *path)
{
- int fd = open(path, O_NOFOLLOW | O_RDONLY);
+ int fd = open(path, PVFS_NOFOLLOW | O_RDONLY);
if (fd != -1) {
close(fd);
return false;