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Moved all find_task(sender) calls into topmost ipc handler.

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System calls now need not search for the tcb they are serving for.
This commit is contained in:
Bahadir Balban
2008-09-16 20:11:24 +03:00
parent 2e94a78253
commit a413b19842
13 changed files with 51 additions and 100 deletions
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31
tasks/mm0/src/file.c
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@@ -403,13 +403,9 @@ int do_close(struct tcb *task, int fd)
return 0;
}
int sys_close(l4id_t sender, int fd)
int sys_close(struct tcb *task, int fd)
{
int ret;
struct tcb *task;
if (!(task = find_task(sender)))
return -ESRCH;
/* Sync the file and update stats */
if ((ret = fsync_common(task, fd)) < 0)
@@ -419,13 +415,8 @@ int sys_close(l4id_t sender, int fd)
return do_close(task, fd);
}
int sys_fsync(l4id_t sender, int fd)
int sys_fsync(struct tcb *task, int fd)
{
struct tcb *task;
if (!(task = find_task(sender)))
return -ESRCH;
/* Sync the file and update stats */
return fsync_common(task, fd);
}
@@ -586,17 +577,13 @@ copy:
return count - left;
}
int sys_read(l4id_t sender, int fd, void *buf, int count)
int sys_read(struct tcb *task, int fd, void *buf, int count)
{
unsigned long pfn_start, pfn_end;
unsigned long cursor, byte_offset;
struct vm_file *vmfile;
struct tcb *task;
int ret = 0;
if (!(task = find_task(sender)))
return -ESRCH;
/* Check fd validity */
if (!task->files->fd[fd].vmfile)
if ((ret = file_open(task, fd)) < 0)
@@ -658,19 +645,15 @@ int sys_read(l4id_t sender, int fd, void *buf, int count)
* We find the page buffer is in, and then copy from the *start* of the page
* rather than buffer's offset in that page.
*/
int sys_write(l4id_t sender, int fd, void *buf, int count)
int sys_write(struct tcb *task, int fd, void *buf, int count)
{
unsigned long pfn_wstart, pfn_wend; /* Write start/end */
unsigned long pfn_fstart, pfn_fend; /* File start/end */
unsigned long pfn_nstart, pfn_nend; /* New pages start/end */
unsigned long cursor, byte_offset;
struct vm_file *vmfile;
struct tcb *task;
int ret = 0;
if (!(task = find_task(sender)))
return -ESRCH;
/* Check fd validity */
if (!task->files->fd[fd].vmfile)
if ((ret = file_open(task, fd)) < 0)
@@ -766,15 +749,11 @@ int sys_write(l4id_t sender, int fd, void *buf, int count)
}
/* FIXME: Check for invalid cursor values. Check for total, sometimes negative. */
int sys_lseek(l4id_t sender, int fd, off_t offset, int whence)
int sys_lseek(struct tcb *task, int fd, off_t offset, int whence)
{
struct tcb *task;
int retval = 0;
unsigned long long total, cursor;
if (!(task = find_task(sender)))
return -ESRCH;
/* Check fd validity */
if (!task->files->fd[fd].vmfile)
if ((retval = file_open(task, fd)) < 0)