X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/d6e6ecbdbf0452ec95afc98c2700076e39b4692f..f0359dd00d60d72c4b3dec85de8e490692f6015c:/syscall.c

diff --git a/syscall.c b/syscall.c
index 5bf3e476..56d88b48 100644
--- a/syscall.c
+++ b/syscall.c
@@ -23,16 +23,22 @@
 #include "rsync.h"
 
 extern int dry_run;
+extern int read_only;
+extern int list_only;
+
+#define CHECK_RO if (read_only || list_only) {errno = EROFS; return -1;}
 
 int do_unlink(char *fname)
 {
 	if (dry_run) return 0;
+	CHECK_RO
 	return unlink(fname);
 }
 
 int do_symlink(char *fname1, char *fname2)
 {
 	if (dry_run) return 0;
+	CHECK_RO
 	return symlink(fname1, fname2);
 }
 
@@ -40,6 +46,7 @@ int do_symlink(char *fname1, char *fname2)
 int do_link(char *fname1, char *fname2)
 {
 	if (dry_run) return 0;
+	CHECK_RO
 	return link(fname1, fname2);
 }
 #endif
@@ -47,6 +54,7 @@ int do_link(char *fname1, char *fname2)
 int do_lchown(const char *path, uid_t owner, gid_t group)
 {
 	if (dry_run) return 0;
+	CHECK_RO
 	return lchown(path, owner, group);
 }
 
@@ -54,6 +62,7 @@ int do_lchown(const char *path, uid_t owner, gid_t group)
 int do_mknod(char *pathname, mode_t mode, dev_t dev)
 {
 	if (dry_run) return 0;
+	CHECK_RO
 	return mknod(pathname, mode, dev);
 }
 #endif
@@ -61,12 +70,23 @@ int do_mknod(char *pathname, mode_t mode, dev_t dev)
 int do_rmdir(char *pathname)
 {
 	if (dry_run) return 0;
+	CHECK_RO
 	return rmdir(pathname);
 }
 
 int do_open(char *pathname, int flags, mode_t mode)
 {
-	if (dry_run) return -1;
+	if (flags != O_RDONLY) {
+	    if (dry_run) return -1;
+	    CHECK_RO
+	}
+#ifdef O_BINARY
+	/* for Windows */
+	flags |= O_BINARY;
+#endif
+	/* some systems can't handle a double / */
+	if (pathname[0] == '/' && pathname[1] == '/') pathname++;
+
 	return open(pathname, flags, mode);
 }
 
@@ -74,6 +94,7 @@ int do_open(char *pathname, int flags, mode_t mode)
 int do_chmod(const char *path, mode_t mode)
 {
 	if (dry_run) return 0;
+	CHECK_RO
 	return chmod(path, mode);
 }
 #endif
@@ -81,18 +102,21 @@ int do_chmod(const char *path, mode_t mode)
 int do_rename(char *fname1, char *fname2)
 {
 	if (dry_run) return 0;
+	CHECK_RO
 	return rename(fname1, fname2);
 }
 
 int do_mkdir(char *fname, mode_t mode)
 {
 	if (dry_run) return 0;
+	CHECK_RO
 	return mkdir(fname, mode);
 }
 
 char *do_mktemp(char *template)
 {
 	if (dry_run) return NULL;
+	if (read_only) {errno = EROFS; return NULL;}
 	return mktemp(template);
 }
 
@@ -128,26 +152,29 @@ int do_fstat(int fd, STRUCT_STAT *st)
 OFF_T do_lseek(int fd, OFF_T offset, int whence)
 {
 #if HAVE_OFF64_T
+	off64_t lseek64();
 	return lseek64(fd, offset, whence);
 #else
 	return lseek(fd, offset, whence);
 #endif
 }
 
-char *d_name(struct dirent *di)
+#ifdef USE_MMAP
+void *do_mmap(void *start, int len, int prot, int flags, int fd, OFF_T offset)
 {
-#if defined(SunOS) && SunOS >= 50
-	static int first = 1;
-	static int broken;
-	if (first) {
-		first = 0;
-		if (!di->d_name[0] && strcmp(".", di->d_name-2)==0) {
-			fprintf(stderr,"WARNING: broken readdir\n");
-			broken = 1;
-		}
-	}
-	if (broken)
-		return (di->d_name - 2);
+#if HAVE_OFF64_T
+	return mmap64(start, len, prot, flags, fd, offset);
+#else
+	return mmap(start, len, prot, flags, fd, offset);
 #endif
+}
+#endif
+
+char *d_name(struct dirent *di)
+{
+#if HAVE_BROKEN_READDIR
+	return (di->d_name - 2);
+#else
 	return di->d_name;
+#endif
 }