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added a file open funtion

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This commit is contained in:
Jay Sorg 2012-10-13 22:48:05 -07:00
parent c1dfea1613
commit e07dd5afb5
2 changed files with 41 additions and 0 deletions
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38
common/os_calls.c
View File

@ -1370,6 +1370,44 @@ g_file_open(const char *file_name)
#endif
}
/*****************************************************************************/
/* returns -1 on error, else return handle or file descriptor */
int APP_CC
g_file_open_ex(const char *file_name, int aread, int awrite,
int acreate, int atrunc)
{
#if defined(_WIN32)
return -1;
#else
int rv;
int flags;
flags = 0;
if (aread && awrite)
{
flags |= O_RDWR;
}
else if (aread)
{
flags |= O_RDONLY;
}
else if (awrite)
{
flags |= O_WRONLY;
}
if (acreate)
{
flags |= O_CREAT;
}
if (atrunc)
{
flags |= O_TRUNC;
}
rv = open(file_name, flags, S_IRUSR | S_IWUSR);
return rv;
#endif
}
/*****************************************************************************/
/* returns error, always 0 */
int APP_CC

3
common/os_calls.h
View File

@ -133,6 +133,9 @@ g_memcmp(const void* s1, const void* s2, int len);
int APP_CC
g_file_open(const char* file_name);
int APP_CC
g_file_open_ex(const char *file_name, int aread, int awrite,
int acreate, int atrunc);
int APP_CC
g_file_close(int fd);
int APP_CC
g_file_read(int fd, char* ptr, int len);