If the daemon is unable to fork a child to accept a connection, print

[rsync/rsync.git] / syscall.c

diff --git a/syscall.c b/syscall.c
index 5bf3e47..dbac7dc 100644 (file)
--- 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
@@ -81,19 +102,38 @@ 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)
+/* like mkstemp but forces permissions */
+int do_mkstemp(char *template, mode_t perms)
 {
-       if (dry_run) return NULL;
-       return mktemp(template);
+       if (dry_run) return -1;
+       if (read_only) {errno = EROFS; return -1;}
+
+#if defined(HAVE_SECURE_MKSTEMP) && defined(HAVE_FCHMOD)
+       {
+               int fd = mkstemp(template);
+               if (fd == -1) return -1;
+               if (fchmod(fd, perms) != 0) {
+                       close(fd);
+                       unlink(template);
+                       return -1;
+               }
+               return fd;
+       }
+#else
+       if (!mktemp(template)) return -1;
+       return do_open(template, O_RDWR|O_EXCL|O_CREAT, perms);
+#endif
 }
 
 int do_stat(const char *fname, STRUCT_STAT *st)
@@ -128,26 +168,29 @@ 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
 }