diff options
Diffstat (limited to 'arch/um/drivers/ubd_kern.c')
-rw-r--r-- | arch/um/drivers/ubd_kern.c | 31 |
1 files changed, 17 insertions, 14 deletions
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c index c171d0aa5e9d..101efd26d467 100644 --- a/arch/um/drivers/ubd_kern.c +++ b/arch/um/drivers/ubd_kern.c | |||
@@ -1194,15 +1194,16 @@ int open_ubd_file(char *file, struct openflags *openflags, | |||
1194 | int fd, err, sectorsize, asked_switch, mode = 0644; | 1194 | int fd, err, sectorsize, asked_switch, mode = 0644; |
1195 | 1195 | ||
1196 | fd = os_open_file(file, *openflags, mode); | 1196 | fd = os_open_file(file, *openflags, mode); |
1197 | if(fd < 0){ | 1197 | if (fd < 0) { |
1198 | if((fd == -ENOENT) && (create_cow_out != NULL)) | 1198 | if ((fd == -ENOENT) && (create_cow_out != NULL)) |
1199 | *create_cow_out = 1; | 1199 | *create_cow_out = 1; |
1200 | if(!openflags->w || | 1200 | if (!openflags->w || |
1201 | ((fd != -EROFS) && (fd != -EACCES))) return(fd); | 1201 | ((fd != -EROFS) && (fd != -EACCES))) |
1202 | return fd; | ||
1202 | openflags->w = 0; | 1203 | openflags->w = 0; |
1203 | fd = os_open_file(file, *openflags, mode); | 1204 | fd = os_open_file(file, *openflags, mode); |
1204 | if(fd < 0) | 1205 | if (fd < 0) |
1205 | return(fd); | 1206 | return fd; |
1206 | } | 1207 | } |
1207 | 1208 | ||
1208 | err = os_lock_file(fd, openflags->w); | 1209 | err = os_lock_file(fd, openflags->w); |
@@ -1212,7 +1213,8 @@ int open_ubd_file(char *file, struct openflags *openflags, | |||
1212 | } | 1213 | } |
1213 | 1214 | ||
1214 | /* Succesful return case! */ | 1215 | /* Succesful return case! */ |
1215 | if(backing_file_out == NULL) return(fd); | 1216 | if(backing_file_out == NULL) |
1217 | return(fd); | ||
1216 | 1218 | ||
1217 | err = read_cow_header(file_reader, &fd, &version, &backing_file, &mtime, | 1219 | err = read_cow_header(file_reader, &fd, &version, &backing_file, &mtime, |
1218 | &size, §orsize, &align, bitmap_offset_out); | 1220 | &size, §orsize, &align, bitmap_offset_out); |
@@ -1221,7 +1223,8 @@ int open_ubd_file(char *file, struct openflags *openflags, | |||
1221 | "errno = %d\n", file, -err); | 1223 | "errno = %d\n", file, -err); |
1222 | goto out_close; | 1224 | goto out_close; |
1223 | } | 1225 | } |
1224 | if(err) return(fd); | 1226 | if(err) |
1227 | return(fd); | ||
1225 | 1228 | ||
1226 | asked_switch = path_requires_switch(*backing_file_out, backing_file, file); | 1229 | asked_switch = path_requires_switch(*backing_file_out, backing_file, file); |
1227 | 1230 | ||
@@ -1230,24 +1233,24 @@ int open_ubd_file(char *file, struct openflags *openflags, | |||
1230 | printk("Switching backing file to '%s'\n", *backing_file_out); | 1233 | printk("Switching backing file to '%s'\n", *backing_file_out); |
1231 | err = write_cow_header(file, fd, *backing_file_out, | 1234 | err = write_cow_header(file, fd, *backing_file_out, |
1232 | sectorsize, align, &size); | 1235 | sectorsize, align, &size); |
1233 | if(err){ | 1236 | if (err) { |
1234 | printk("Switch failed, errno = %d\n", -err); | 1237 | printk("Switch failed, errno = %d\n", -err); |
1235 | goto out_close; | 1238 | goto out_close; |
1236 | } | 1239 | } |
1237 | } | 1240 | } else { |
1238 | else { | ||
1239 | *backing_file_out = backing_file; | 1241 | *backing_file_out = backing_file; |
1240 | err = backing_file_mismatch(*backing_file_out, size, mtime); | 1242 | err = backing_file_mismatch(*backing_file_out, size, mtime); |
1241 | if(err) goto out_close; | 1243 | if (err) |
1244 | goto out_close; | ||
1242 | } | 1245 | } |
1243 | 1246 | ||
1244 | cow_sizes(version, size, sectorsize, align, *bitmap_offset_out, | 1247 | cow_sizes(version, size, sectorsize, align, *bitmap_offset_out, |
1245 | bitmap_len_out, data_offset_out); | 1248 | bitmap_len_out, data_offset_out); |
1246 | 1249 | ||
1247 | return(fd); | 1250 | return fd; |
1248 | out_close: | 1251 | out_close: |
1249 | os_close_file(fd); | 1252 | os_close_file(fd); |
1250 | return(err); | 1253 | return err; |
1251 | } | 1254 | } |
1252 | 1255 | ||
1253 | int create_cow_file(char *cow_file, char *backing_file, struct openflags flags, | 1256 | int create_cow_file(char *cow_file, char *backing_file, struct openflags flags, |