+/* vi: set sw=4 ts=4: */
/*
* Mini `cp' and `mv' implementation for BusyBox.
*
#define is_cp 0
#define is_mv 1
-static const char *dz; /* dollar zero, .bss */
-static int dz_i; /* index, .bss */
-static const char *cp_mv_usage[] = /* .rodata */
+static const char *dz; /* dollar zero, .bss */
+static int dz_i; /* index, .bss */
+static const char *cp_mv_usage[] = /* .rodata */
{
- "cp [OPTION]... SOURCE DEST\n"
- " or: cp [OPTION]... SOURCE... DIRECTORY\n\n"
- "Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY.\n"
- "\n"
- "\t-a\tsame as -dpR\n"
- "\t-d\tpreserve links\n"
- "\t-p\tpreserve file attributes if possible\n"
- "\t-R\tcopy directories recursively\n"
- ,
- "mv SOURCE DEST\n"
- " or: mv SOURCE... DIRECTORY\n\n"
- "Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY.\n"
- "Warning!! This is not GNU `mv'. It does not preserve hard links.\n"
+ "cp [OPTION]... SOURCE DEST\n"
+ " or: cp [OPTION]... SOURCE... DIRECTORY\n\n"
+ "Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY.\n"
+ "\n"
+ "\t-a\tsame as -dpR\n"
+ "\t-d\tpreserve links\n"
+ "\t-p\tpreserve file attributes if possible\n"
+ "\t-R\tcopy directories recursively\n",
+ "mv SOURCE DEST\n"
+ " or: mv SOURCE... DIRECTORY\n\n"
+ "Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY.\n"
+ "Warning!! This is not GNU `mv'. It does not preserve hard links.\n"
};
extern int cp_mv_main(int argc, char **argv)
{
- __label__ name_too_long__exit;
- __label__ exit_false;
-
- int recursiveFlag;
- int followLinks;
- int preserveFlag;
+ __label__ name_too_long__exit;
+ __label__ exit_false;
+
+ int recursiveFlag;
+ int followLinks;
+ int preserveFlag;
+
+ const char *baseSrcName;
+ int srcDirFlag;
+
+ char baseDestName[PATH_MAX + 1];
+ size_t baseDestLen;
+ int destDirFlag;
+
+ void fill_baseDest_buf(char *_buf, size_t * _buflen) {
+ const char *srcBasename;
+ if ((srcBasename = strrchr(baseSrcName, '/')) == NULL) {
+ srcBasename = baseSrcName;
+ if (_buf[*_buflen - 1] != '/') {
+ if (++(*_buflen) > PATH_MAX)
+ goto name_too_long__exit;
+ strcat(_buf, "/");
+ }
+ }
+ if (*_buflen + strlen(srcBasename) > PATH_MAX)
+ goto name_too_long__exit;
+ strcat(_buf, srcBasename);
+ return;
+ }
- const char *baseSrcName;
- int srcDirFlag;
+ int fileAction(const char *fileName, struct stat *statbuf) {
+ __label__ return_false;
+ char destName[PATH_MAX + 1];
+ size_t destLen;
+ const char *srcBasename;
+
+ strcpy(destName, baseDestName);
+ destLen = strlen(destName);
+
+ if (srcDirFlag == TRUE) {
+ if (recursiveFlag == FALSE) {
+ fprintf(stderr, omitting_directory, "cp", baseSrcName);
+ return TRUE;
+ }
+ srcBasename = (strstr(fileName, baseSrcName)
+ + strlen(baseSrcName));
+
+ if (destLen + strlen(srcBasename) > PATH_MAX) {
+ fprintf(stderr, name_too_long, "cp");
+ goto return_false;
+ }
+ strcat(destName, srcBasename);
+ } else if (destDirFlag == TRUE) {
+ fill_baseDest_buf(&destName[0], &destLen);
+ } else {
+ srcBasename = baseSrcName;
+ }
+ return copyFile(fileName, destName, preserveFlag, followLinks);
- char baseDestName[PATH_MAX + 1];
- size_t baseDestLen;
- int destDirFlag;
+ return_false:
+ return FALSE;
+ }
- void fill_baseDest_buf(char *_buf, size_t *_buflen)
- {
- const char *srcBasename;
- if ((srcBasename = strrchr(baseSrcName, '/')) == NULL)
- {
- srcBasename = baseSrcName;
- if (_buf[*_buflen - 1] != '/')
- {
- if (++(*_buflen) > PATH_MAX)
- goto name_too_long__exit;
- strcat(_buf, "/");
+ int rmfileAction(const char *fileName, struct stat *statbuf) {
+ if (unlink(fileName) < 0) {
+ perror(fileName);
+ return FALSE;
}
- }
- if (*_buflen + strlen(srcBasename) > PATH_MAX)
- goto name_too_long__exit;
- strcat(_buf, srcBasename);
- return;
+ return TRUE;
}
- int fileAction(const char *fileName, struct stat *statbuf)
- {
- __label__ return_false;
- char destName[PATH_MAX + 1];
- size_t destLen;
- const char *srcBasename;
-
- strcpy(destName, baseDestName);
- destLen = strlen(destName);
-
- if (srcDirFlag == TRUE)
- {
- if (recursiveFlag == FALSE)
- {
- fprintf(stderr, omitting_directory, "cp", baseSrcName);
- return TRUE;
- }
- srcBasename = (strstr(fileName, baseSrcName)
- + strlen(baseSrcName));
- if (destLen + strlen(srcBasename) > PATH_MAX)
- {
- fprintf(stderr, name_too_long, "cp");
- goto return_false;
+ int rmdirAction(const char *fileName, struct stat *statbuf) {
+ if (rmdir(fileName) < 0) {
+ perror(fileName);
+ return FALSE;
}
- strcat(destName, srcBasename);
- }
- else if (destDirFlag == TRUE)
- {
- fill_baseDest_buf(&destName[0], &destLen);
- }
- else
- {
- srcBasename = baseSrcName;
- }
- return copyFile(fileName, destName, preserveFlag, followLinks);
-
- return_false:
- return FALSE;
+ return TRUE;
}
- int rmfileAction(const char *fileName, struct stat* statbuf)
- {
- if (unlink(fileName) < 0 ) {
- perror(fileName);
- return FALSE;
- }
- return TRUE;
- }
-
- int rmdirAction(const char *fileName, struct stat* statbuf)
- {
- if (rmdir(fileName) < 0 ) {
- perror(fileName);
- return FALSE;
- }
- return TRUE;
- }
-
- if ((dz = strrchr(*argv, '/')) == NULL) dz = *argv; else dz++;
- if (*dz == 'c' && *(dz + 1) == 'p') dz_i = is_cp; else dz_i = is_mv;
- if (argc < 3) usage(cp_mv_usage[dz_i]);
- argc--;
- argv++;
-
- if (dz_i == is_cp)
- {
- recursiveFlag = preserveFlag = FALSE;
- followLinks = TRUE;
- while (**argv == '-')
- {
- while (*++(*argv))
- {
- switch (**argv)
- {
- case 'a':
- followLinks = FALSE;
- preserveFlag = TRUE;
- recursiveFlag = TRUE;
- break;
- case 'd':
- followLinks = FALSE;
- break;
- case 'p':
- preserveFlag = TRUE;
- break;
- case 'R':
- recursiveFlag = TRUE;
- break;
- default:
- usage(cp_mv_usage[is_cp]);
+ if ((dz = strrchr(*argv, '/')) == NULL)
+ dz = *argv;
+ else
+ dz++;
+ if (*dz == 'c' && *(dz + 1) == 'p')
+ dz_i = is_cp;
+ else
+ dz_i = is_mv;
+ if (argc < 3)
+ usage(cp_mv_usage[dz_i]);
+ argc--;
+ argv++;
+
+ if (dz_i == is_cp) {
+ recursiveFlag = preserveFlag = FALSE;
+ followLinks = TRUE;
+ while (**argv == '-') {
+ while (*++(*argv)) {
+ switch (**argv) {
+ case 'a':
+ followLinks = FALSE;
+ preserveFlag = TRUE;
+ recursiveFlag = TRUE;
+ break;
+ case 'd':
+ followLinks = FALSE;
+ break;
+ case 'p':
+ preserveFlag = TRUE;
+ break;
+ case 'R':
+ recursiveFlag = TRUE;
+ break;
+ default:
+ usage(cp_mv_usage[is_cp]);
+ }
+ }
+ argc--;
+ argv++;
}
- }
- argc--;
- argv++;
- }
- }
- else /* (dz_i == is_mv) */
- {
- recursiveFlag = preserveFlag = TRUE;
- followLinks = FALSE;
- }
+ } else { /* (dz_i == is_mv) */
- if (strlen(argv[argc - 1]) > PATH_MAX)
- {
- fprintf(stderr, name_too_long, "cp");
- goto exit_false;
- }
- strcpy(baseDestName, argv[argc - 1]);
- baseDestLen = strlen(baseDestName);
- if (baseDestLen == 0) goto exit_false;
+ recursiveFlag = preserveFlag = TRUE;
+ followLinks = FALSE;
+ }
- destDirFlag = isDirectory(baseDestName, TRUE);
- if ((argc > 3) && destDirFlag == FALSE)
- {
- fprintf(stderr, not_a_directory, "cp", baseDestName);
- goto exit_false;
- }
+ if (strlen(argv[argc - 1]) > PATH_MAX) {
+ fprintf(stderr, name_too_long, "cp");
+ goto exit_false;
+ }
+ strcpy(baseDestName, argv[argc - 1]);
+ baseDestLen = strlen(baseDestName);
+ if (baseDestLen == 0)
+ goto exit_false;
+
+ destDirFlag = isDirectory(baseDestName, TRUE);
+ if ((argc > 3) && destDirFlag == FALSE) {
+ fprintf(stderr, not_a_directory, "cp", baseDestName);
+ goto exit_false;
+ }
- while (argc-- > 1)
- {
- size_t srcLen;
- int flags_memo;
+ while (argc-- > 1) {
+ size_t srcLen;
+ int flags_memo;
- baseSrcName = *(argv++);
+ baseSrcName = *(argv++);
- if ((srcLen = strlen(baseSrcName)) > PATH_MAX)
- goto name_too_long__exit;
+ if ((srcLen = strlen(baseSrcName)) > PATH_MAX)
+ goto name_too_long__exit;
- if (srcLen == 0) continue;
+ if (srcLen == 0)
+ continue;
- srcDirFlag = isDirectory(baseSrcName, followLinks);
+ srcDirFlag = isDirectory(baseSrcName, followLinks);
- if ((flags_memo = (recursiveFlag == TRUE &&
- srcDirFlag == TRUE && destDirFlag == TRUE)))
- {
- fill_baseDest_buf(&baseDestName[0], &baseDestLen);
+ if ((flags_memo = (recursiveFlag == TRUE &&
+ srcDirFlag == TRUE && destDirFlag == TRUE))) {
+ fill_baseDest_buf(&baseDestName[0], &baseDestLen);
+ }
+ if (recursiveAction(baseSrcName,
+ recursiveFlag, followLinks, FALSE,
+ fileAction, fileAction) == FALSE)
+ goto exit_false;
+
+ if (dz_i == is_mv &&
+ recursiveAction(baseSrcName,
+ recursiveFlag, followLinks, TRUE,
+ rmfileAction, rmdirAction) == FALSE)
+ goto exit_false;
+
+ if (flags_memo)
+ *(baseDestName + baseDestLen) = '\0';
}
- if (recursiveAction(baseSrcName,
- recursiveFlag, followLinks, FALSE,
- fileAction, fileAction)
- == FALSE) goto exit_false;
-
- if (dz_i == is_mv &&
- recursiveAction(baseSrcName,
- recursiveFlag, followLinks, TRUE,
- rmfileAction, rmdirAction)
- == FALSE) goto exit_false;
- if (flags_memo) *(baseDestName + baseDestLen) = '\0';
- }
+ exit TRUE;
- exit TRUE;
-
- name_too_long__exit:
- fprintf(stderr, name_too_long, "cp");
- exit_false:
- exit FALSE;
+ name_too_long__exit:
+ fprintf(stderr, name_too_long, "cp");
+ exit_false:
+ exit FALSE;
}
// Local Variables:
projects / oweals / busybox.git / blobdiff