From 08f12033c13b8df0aa3ccdeffcdeec8febe9e4fb Mon Sep 17 00:00:00 2001 From: John Stultz Date: Tue, 20 Dec 2011 16:49:54 -0800 Subject: [PATCH] --- yaml --- r: 281407 b: refs/heads/master c: 1efb34394a694b458d66f25072318c375e22afe2 h: refs/heads/master i: 281405: f7b55781bdc95bb6b7deba3436deacd916771537 281403: 5adc08d0a70962e29813a373f07022a5acd8f9ce 281399: 2965263b86c6128bbc66de7ab1d14d89c870b69d 281391: f75a5d3cc516613dfe27b5e6fe3aa9b8ff744991 281375: d537fd442af087208b942589dcd7160974390ac8 281343: 1e38ce082daa447e0b916079cdb84bca2e4a515e v: v3 --- [refs] | 2 +- trunk/drivers/staging/android/ashmem.c | 46 ++++++++++++-------------- 2 files changed, 22 insertions(+), 26 deletions(-) diff --git a/[refs] b/[refs] index c6130f319443..6862d47fc6a5 100644 --- a/[refs] +++ b/[refs] @@ -1,2 +1,2 @@ --- -refs/heads/master: 33e8fc463eeec29227282e4bd2082f5928d629a5 +refs/heads/master: 1efb34394a694b458d66f25072318c375e22afe2 diff --git a/trunk/drivers/staging/android/ashmem.c b/trunk/drivers/staging/android/ashmem.c index a78ba21e02b5..99052bfd3a2d 100644 --- a/trunk/drivers/staging/android/ashmem.c +++ b/trunk/drivers/staging/android/ashmem.c @@ -41,11 +41,11 @@ * Big Note: Mappings do NOT pin this structure; it dies on close() */ struct ashmem_area { - char name[ASHMEM_FULL_NAME_LEN];/* optional name for /proc/pid/maps */ - struct list_head unpinned_list; /* list of all ashmem areas */ - struct file *file; /* the shmem-based backing file */ - size_t size; /* size of the mapping, in bytes */ - unsigned long prot_mask; /* allowed prot bits, as vm_flags */ + char name[ASHMEM_FULL_NAME_LEN]; /* optional name in /proc/pid/maps */ + struct list_head unpinned_list; /* list of all ashmem areas */ + struct file *file; /* the shmem-based backing file */ + size_t size; /* size of the mapping, in bytes */ + unsigned long prot_mask; /* allowed prot bits, as vm_flags */ }; /* @@ -79,26 +79,26 @@ static struct kmem_cache *ashmem_area_cachep __read_mostly; static struct kmem_cache *ashmem_range_cachep __read_mostly; #define range_size(range) \ - ((range)->pgend - (range)->pgstart + 1) + ((range)->pgend - (range)->pgstart + 1) #define range_on_lru(range) \ - ((range)->purged == ASHMEM_NOT_PURGED) + ((range)->purged == ASHMEM_NOT_PURGED) #define page_range_subsumes_range(range, start, end) \ - (((range)->pgstart >= (start)) && ((range)->pgend <= (end))) + (((range)->pgstart >= (start)) && ((range)->pgend <= (end))) #define page_range_subsumed_by_range(range, start, end) \ - (((range)->pgstart <= (start)) && ((range)->pgend >= (end))) + (((range)->pgstart <= (start)) && ((range)->pgend >= (end))) #define page_in_range(range, page) \ - (((range)->pgstart <= (page)) && ((range)->pgend >= (page))) + (((range)->pgstart <= (page)) && ((range)->pgend >= (page))) #define page_range_in_range(range, start, end) \ - (page_in_range(range, start) || page_in_range(range, end) || \ - page_range_subsumes_range(range, start, end)) + (page_in_range(range, start) || page_in_range(range, end) || \ + page_range_subsumes_range(range, start, end)) #define range_before_page(range, page) \ - ((range)->pgend < (page)) + ((range)->pgend < (page)) #define PROT_MASK (PROT_EXEC | PROT_READ | PROT_WRITE) @@ -220,9 +220,8 @@ static ssize_t ashmem_read(struct file *file, char __user *buf, mutex_lock(&ashmem_mutex); /* If size is not set, or set to 0, always return EOF. */ - if (asma->size == 0) { + if (asma->size == 0) goto out; - } if (!asma->file) { ret = -EBADF; @@ -230,9 +229,8 @@ static ssize_t ashmem_read(struct file *file, char __user *buf, } ret = asma->file->f_op->read(asma->file, buf, len, pos); - if (ret < 0) { + if (ret < 0) goto out; - } /** Update backing file pos, since f_ops->read() doesn't */ asma->file->f_pos = *pos; @@ -260,9 +258,8 @@ static loff_t ashmem_llseek(struct file *file, loff_t offset, int origin) } ret = asma->file->f_op->llseek(asma->file, offset, origin); - if (ret < 0) { + if (ret < 0) goto out; - } /** Copy f_pos from backing file, since f_ops->llseek() sets it */ file->f_pos = asma->file->f_pos; @@ -272,10 +269,9 @@ static loff_t ashmem_llseek(struct file *file, loff_t offset, int origin) return ret; } -static inline unsigned long -calc_vm_may_flags(unsigned long prot) +static inline unsigned long calc_vm_may_flags(unsigned long prot) { - return _calc_vm_trans(prot, PROT_READ, VM_MAYREAD ) | + return _calc_vm_trans(prot, PROT_READ, VM_MAYREAD) | _calc_vm_trans(prot, PROT_WRITE, VM_MAYWRITE) | _calc_vm_trans(prot, PROT_EXEC, VM_MAYEXEC); } @@ -295,7 +291,7 @@ static int ashmem_mmap(struct file *file, struct vm_area_struct *vma) /* requested protection bits must match our allowed protection mask */ if (unlikely((vma->vm_flags & ~calc_vm_prot_bits(asma->prot_mask)) & - calc_vm_prot_bits(PROT_MASK))) { + calc_vm_prot_bits(PROT_MASK))) { ret = -EPERM; goto out; } @@ -688,8 +684,8 @@ static struct file_operations ashmem_fops = { .owner = THIS_MODULE, .open = ashmem_open, .release = ashmem_release, - .read = ashmem_read, - .llseek = ashmem_llseek, + .read = ashmem_read, + .llseek = ashmem_llseek, .mmap = ashmem_mmap, .unlocked_ioctl = ashmem_ioctl, .compat_ioctl = ashmem_ioctl,