diff options
Diffstat (limited to 'utility.c')
| -rw-r--r-- | utility.c | 45 |
1 files changed, 30 insertions, 15 deletions
@@ -231,7 +231,7 @@ void reset_ino_dev_hashtable(void) #endif /* BB_CP_MV || BB_DU */ -#if defined (BB_CP_MV) || defined (BB_DU) || defined (BB_LN) || defined (BB_AR) +#if defined (BB_CP_MV) || defined (BB_DU) || defined (BB_LN) /* * Return TRUE if a fileName is a directory. * Nonexistant files return FALSE. @@ -264,6 +264,29 @@ int isDirectory(const char *fileName, const int followLinks, struct stat *statBu } #endif +#if defined (BB_AR) +/* + * Copy readSize bytes between two file descriptors + */ +int copySubFile(int srcFd, int dstFd, size_t remaining) +{ + size_t size; + char buffer[BUFSIZ]; + + while (remaining > 0) { + if (remaining > BUFSIZ) + size = BUFSIZ; + else + size = remaining; + if (fullWrite(dstFd, buffer, fullRead(srcFd, buffer, size)) < size) + return(FALSE); + remaining -= size; + } + return (TRUE); +} +#endif + + #if defined (BB_CP_MV) /* * Copy one file to another, while possibly preserving its modes, times, and @@ -277,9 +300,7 @@ copyFile(const char *srcName, const char *destName, { int rfd; int wfd; - int rcc; int status; - char buf[BUF_SIZE]; struct stat srcStatBuf; struct stat dstStatBuf; struct utimbuf times; @@ -364,8 +385,7 @@ copyFile(const char *srcName, const char *destName, return FALSE; } - wfd = - open(destName, O_WRONLY | O_CREAT | O_TRUNC, + wfd = open(destName, O_WRONLY | O_CREAT | O_TRUNC, srcStatBuf.st_mode); if (wfd < 0) { perror(destName); @@ -373,14 +393,9 @@ copyFile(const char *srcName, const char *destName, return FALSE; } - while ((rcc = read(rfd, buf, sizeof(buf))) > 0) { - if (fullWrite(wfd, buf, rcc) < 0) - goto error_exit; - } - if (rcc < 0) { - goto error_exit; - } - + if (copySubFile(rfd, wfd, srcStatBuf.st_size)==FALSE) + goto error_exit; + close(rfd); if (close(wfd) < 0) { return FALSE; @@ -677,7 +692,7 @@ int recursiveAction(const char *fileName, -#if defined (BB_TAR) || defined (BB_MKDIR) || defined (BB_AR) +#if defined (BB_TAR) || defined (BB_MKDIR) /* * Attempt to create the directories along the specified path, except for * the final component. The mode is given for the final directory only, @@ -1292,7 +1307,7 @@ extern long getNum(const char *cp) #endif /* BB_DD || BB_TAIL */ -#if defined BB_INIT || defined BB_SYSLOGD || defined BB_AR +#if defined BB_INIT || defined BB_SYSLOGD /* try to open up the specified device */ extern int device_open(char *device, int mode) { |