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copy_file: handle "cp /dev/foo file" (almost) compatibly to coreutils.

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(almost because we do not copy mode, which is probably wasn't intended).
+61 bytes.
This commit is contained in:
Denis Vlasenko
2008-03-28 17:49:31 +00:00
parent a38ba59cc3
commit b9ad75fa60
6 changed files with 63 additions and 26 deletions
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34
include/libbb.h
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@ -223,8 +223,27 @@ extern char *skip_non_whitespace(const char *);
//TODO: supply a pointer to char[11] buffer (avoid statics)?
extern const char *bb_mode_string(mode_t mode);
extern int is_directory(const char *name, int followLinks, struct stat *statBuf);
enum { /* DO NOT CHANGE THESE VALUES! cp.c, mv.c, install.c depend on them. */
FILEUTILS_PRESERVE_STATUS = 1,
FILEUTILS_DEREFERENCE = 2,
FILEUTILS_RECUR = 4,
FILEUTILS_FORCE = 8,
FILEUTILS_INTERACTIVE = 0x10,
FILEUTILS_MAKE_HARDLINK = 0x20,
FILEUTILS_MAKE_SOFTLINK = 0x40,
#if ENABLE_SELINUX
FILEUTILS_PRESERVE_SECURITY_CONTEXT = 0x80,
FILEUTILS_SET_SECURITY_CONTEXT = 0x100
#endif
};
#define FILEUTILS_CP_OPTSTR "pdRfils" USE_SELINUX("c")
extern int remove_file(const char *path, int flags);
/* NB: without FILEUTILS_RECUR in flags, it will basically "cat"
* the source, not copy (unless "source" is a directory).
* This makes "cp /dev/null file" and "install /dev/null file" (!!!)
* work coreutils-compatibly. */
extern int copy_file(const char *source, const char *dest, int flags);
enum {
ACTION_RECURSE = (1 << 0),
ACTION_FOLLOWLINKS = (1 << 1),
@ -1170,21 +1189,6 @@ void *md5_end(void *resbuf, md5_ctx_t *ctx);
uint32_t *crc32_filltable(uint32_t *tbl256, int endian);
enum { /* DO NOT CHANGE THESE VALUES! cp.c, mv.c, install.c depend on them. */
FILEUTILS_PRESERVE_STATUS = 1,
FILEUTILS_DEREFERENCE = 2,
FILEUTILS_RECUR = 4,
FILEUTILS_FORCE = 8,
FILEUTILS_INTERACTIVE = 0x10,
FILEUTILS_MAKE_HARDLINK = 0x20,
FILEUTILS_MAKE_SOFTLINK = 0x40,
#if ENABLE_SELINUX
FILEUTILS_PRESERVE_SECURITY_CONTEXT = 0x80,
FILEUTILS_SET_SECURITY_CONTEXT = 0x100
#endif
};
#define FILEUTILS_CP_OPTSTR "pdRfils" USE_SELINUX("c")
extern const char *applet_name;
/* "BusyBox vN.N.N (timestamp or extra_version)" */
extern const char bb_banner[];