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| author | Paul Mundt <lethal@linux-sh.org> | 2009-08-23 18:04:07 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-08-23 18:04:07 +0900 |
| commit | c3144fc46f987413df10e83659f0bf1aad76f79e (patch) | |
| tree | a09f3c13c32664a617d3981ae111436c3127ccc3 /mm/nommu.c | |
| parent | 4f896ffca2b72f4b719746e7fbb0b623252e6ac9 (diff) | |
| parent | cc58f597afc63a57bb55ed97c2a72f7405320c93 (diff) | |
| download | op-kernel-dev-c3144fc46f987413df10e83659f0bf1aad76f79e.zip op-kernel-dev-c3144fc46f987413df10e83659f0bf1aad76f79e.tar.gz | |
Merge branches 'sh/hwblk' and 'sh/pm-runtime'
Diffstat (limited to 'mm/nommu.c')
| -rw-r--r-- | mm/nommu.c | 7 |
1 files changed, 4 insertions, 3 deletions
@@ -69,9 +69,6 @@ int sysctl_max_map_count = DEFAULT_MAX_MAP_COUNT; int sysctl_nr_trim_pages = CONFIG_NOMMU_INITIAL_TRIM_EXCESS; int heap_stack_gap = 0; -/* amount of vm to protect from userspace access */ -unsigned long mmap_min_addr = CONFIG_DEFAULT_MMAP_MIN_ADDR; - atomic_long_t mmap_pages_allocated; EXPORT_SYMBOL(mem_map); @@ -922,6 +919,10 @@ static int validate_mmap_request(struct file *file, if (!file->f_op->read) capabilities &= ~BDI_CAP_MAP_COPY; + /* The file shall have been opened with read permission. */ + if (!(file->f_mode & FMODE_READ)) + return -EACCES; + if (flags & MAP_SHARED) { /* do checks for writing, appending and locking */ if ((prot & PROT_WRITE) && |
