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util: Change read_safe_eof and introduce objzero and memzero

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Should be more convenient to use

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
This commit is contained in:
Cyrill Gorcunov
2011-10-22 18:52:18 +04:00
parent b001849a00
commit 5f53dc21d9
1 changed files with 12 additions and 10 deletions
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22
include/util.h
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@@ -93,17 +93,19 @@ extern void printk(const char *format, ...);
#define read_ptr_safe(fd, ptr, err) \
jerr(read(fd, ptr, sizeof(*(ptr))) != sizeof(*(ptr)), err)
#define read_safe_eof(fd, ptr, size, rc, err, eof) \
do { \
rc = read(fd, ptr, (size)); \
if (!rc) \
goto eof; \
if (rc != (size)) \
goto err; \
} while (0)
#define read_safe_eof(fd, ptr, size, err) \
({ \
size_t rc__ = read(fd, ptr, (size)); \
if (rc__ && rc__ != (size)) \
goto err; \
rc__; \
})
#define read_ptr_safe_eof(fd, ptr, rc, err, eof) \
read_safe_eof(fd, ptr, sizeof(*(ptr)), rc, err, eof)
#define read_ptr_safe_eof(fd, ptr, err) \
read_safe_eof(fd, ptr, sizeof(*(ptr)), err)
#define objzero(obj_ptr) memset(obj_ptr, 0, sizeof(*(obj_ptr)))
#define memzero(p, size) memset(p, 0, size)
int ptrace_peek_area(pid_t pid, void *dst, void *addr, long bytes);
int ptrace_poke_area(pid_t pid, void *src, void *addr, long bytes);