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fdd54b6334
OpenSSh privilege separation model - http://www.citi.umich.edu/u/provos/ssh/privsep.html Posix_spawn is implemented in POSIX adapter as an alternative to fork() that is heavily used in Privilege separation. Additional state info is added to sshd to accommodate distinguishing the various modes (privileged monitor, unprivileged child, authenticated child). Required service state (like config and host keys) is transmitted over pipes from monitor to child processes. Changes to installation scripts and tests to accomodate new architectural changes
67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
#include "crtheaders.h"
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#include FCNTL_H
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/*fcntl commands*/
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#define F_GETFL 0x1
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#define F_SETFL 0x2
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#define F_GETFD 0x4
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#define F_SETFD 0x8
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/*fd flags*/
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#define FD_CLOEXEC 0x1
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#define F_OK 0
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int w32_fcntl(int fd, int cmd, ... /* arg */);
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#define fcntl(a,b,...) w32_fcntl((a), (b), __VA_ARGS__)
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#define open(a,b,...) w32_open((a), (b), __VA_ARGS__)
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int w32_open(const char *pathname, int flags, ... /* arg */);
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void* w32_fd_to_handle(int fd);
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#define O_RDONLY _O_RDONLY
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#define O_WRONLY _O_WRONLY
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#define O_RDWR _O_RDWR
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#define O_APPEND _O_APPEND
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#define O_CREAT _O_CREAT
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#define O_TRUNC _O_TRUNC
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#define O_EXCL _O_EXCL
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#define O_TEXT _O_TEXT
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#define O_BINARY _O_BINARY
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#define O_RAW _O_BINARY
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#define O_TEMPORARY _O_TEMPORARY
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#define O_NOINHERIT _O_NOINHERIT
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#define O_SEQUENTIAL _O_SEQUENTIAL
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#define O_RANDOM _O_RANDOM
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#define O_U16TEXT _O_U16TEXT
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/*
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* open() POSIX specific modes and flags.
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* Caution while making changes
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* - cross check conflict with common macros in Windows headers
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* - Ex. #define O_APPEND 0x8
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*/
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#define O_ACCMODE 0x0003
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#define O_NONBLOCK 0x0004 /*io operations wont block*/
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# define S_IXUSR 0000100 /* execute/search permission, */
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# define S_IXGRP 0000010 /* execute/search permission, */
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# define S_IXOTH 0000001 /* execute/search permission, */
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# define _S_IWUSR 0000200 /* write permission, */
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# define S_IWUSR _S_IWUSR /* write permission, owner */
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# define S_IWGRP 0000020 /* write permission, group */
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# define S_IWOTH 0000002 /* write permission, other */
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# define S_IRUSR 0000400 /* read permission, owner */
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# define S_IRGRP 0000040 /* read permission, group */
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# define S_IROTH 0000004 /* read permission, other */
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# define S_IRWXU 0000700 /* read, write, execute */
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# define S_IRWXG 0000070 /* read, write, execute */
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# define S_IRWXO 0000007 /* read, write, execute */
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/*
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* File types. Note that the values are different from similar variants
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* defined in stat.h. These are based on similar definition values on Linux
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*/
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#define __S_IFDIR 0040000 /* Directory. */
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#define __S_IFREG 0100000 /* Regular file. */ |