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Removed all references th shared page from libposix

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Added UTCB functions for full ipc that copy buffer or string payloads
in secondary message registers.

Some posix syscalls now use these utcb functions to copy pathnames.
This commit is contained in:
Bahadir Balban
2009-10-07 22:59:34 +03:00
parent 96cd0949b6
commit cb561ab262
11 changed files with 70 additions and 34 deletions
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40
conts/libl4/include/l4lib/arch-arm/utcb.h
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@@ -11,6 +11,7 @@
#ifndef __ASSEMBLY__
#include <l4lib/types.h>
#include <l4/macros.h>
#include <l4/lib/math.h>
#include INC_GLUE(message.h)
#include INC_GLUE(memory.h)
#include <string.h>
@@ -41,10 +42,11 @@ extern struct utcb **kip_utcb_ref;
static inline struct utcb *l4_get_utcb()
{
/*
* By double dereferencing, we get the private TLS (aka UTCB). First
* reference is to the KIP's utcb offset, second is to the utcb itself,
* to which the KIP's utcb reference had been updated during context
* switch.
* By double dereferencing, we get the private TLS
* (aka UTCB). First reference is to the KIP's utcb
* offset, second is to the utcb itself, to which
* the KIP's utcb reference had been updated during
* context switch.
*/
return *kip_utcb_ref;
}
@@ -66,6 +68,36 @@ static inline void write_mr(unsigned int offset, unsigned int val)
l4_get_utcb()->mr_rest[offset - MR_TOTAL] = val;
}
static inline void *utcb_full_buffer()
{
return &l4_get_utcb()->mr_rest[0];
}
static inline char *utcb_full_strcpy_from(const char *src)
{
return strncpy((char *)&l4_get_utcb()->mr_rest[0], src,
L4_UTCB_FULL_BUFFER_SIZE);
}
static inline void *utcb_full_memcpy_from(const char *src, int size)
{
return memcpy(&l4_get_utcb()->mr_rest[0], src,
min(size, L4_UTCB_FULL_BUFFER_SIZE));
}
static inline char *utcb_full_strcpy_to(char *dst)
{
return strncpy(dst, (char *)&l4_get_utcb()->mr_rest[0],
L4_UTCB_FULL_BUFFER_SIZE);
}
static inline void *utcb_full_memcpy_to(char *dst, int size)
{
return memcpy(dst, &l4_get_utcb()->mr_rest[0],
min(size, L4_UTCB_FULL_BUFFER_SIZE));
}
#endif /* !__ASSEMBLY__ */
#endif /* __ARM_UTCB_H__ */