Rev 1227 | Rev 1235 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
| Rev 1227 | Rev 1233 | ||
|---|---|---|---|
| Line 135... | Line 135... | ||
| 135 | as_area_t *a; |
135 | as_area_t *a; |
| 136 | 136 | ||
| 137 | if (base % PAGE_SIZE) |
137 | if (base % PAGE_SIZE) |
| 138 | return NULL; |
138 | return NULL; |
| 139 | 139 | ||
| - | 140 | if (!size) |
|
| - | 141 | return NULL; |
|
| - | 142 | ||
| 140 | /* Writeable executable areas are not supported. */ |
143 | /* Writeable executable areas are not supported. */ |
| 141 | if ((flags & AS_AREA_EXEC) && (flags & AS_AREA_WRITE)) |
144 | if ((flags & AS_AREA_EXEC) && (flags & AS_AREA_WRITE)) |
| 142 | return NULL; |
145 | return NULL; |
| 143 | 146 | ||
| 144 | ipl = interrupts_disable(); |
147 | ipl = interrupts_disable(); |
| Line 459... | Line 462... | ||
| 459 | interrupts_restore(ipl); |
462 | interrupts_restore(ipl); |
| 460 | return (__address) -1; |
463 | return (__address) -1; |
| 461 | } |
464 | } |
| 462 | 465 | ||
| 463 | pages = SIZE2FRAMES((address - area->base) + size); |
466 | pages = SIZE2FRAMES((address - area->base) + size); |
| - | 467 | if (!pages) { |
|
| - | 468 | /* |
|
| - | 469 | * Zero size address space areas are not allowed. |
|
| - | 470 | */ |
|
| - | 471 | spinlock_unlock(&area->lock); |
|
| - | 472 | spinlock_unlock(&as->lock); |
|
| - | 473 | interrupts_restore(ipl); |
|
| - | 474 | return (__address) -1; |
|
| - | 475 | } |
|
| - | 476 | ||
| 464 | if (pages < area->pages) { |
477 | if (pages < area->pages) { |
| 465 | int i; |
478 | int i; |
| 466 | 479 | ||
| 467 | /* |
480 | /* |
| 468 | * Shrinking the area. |
481 | * Shrinking the area. |