From ed7e2ec8a334cc534db981fe2fd0e02b3d39bf62 Mon Sep 17 00:00:00 2001 From: Paul Eggert Date: Mon, 13 Dec 1999 03:07:14 +0000 Subject: [PATCH] (): New include. (start_header): Use `member names' to refer to archive member names, not `archive names'. Warn about `..' in member names. (finish_sparse_file, dump_file): Quote arbitrary strings in diagnostics. (finish_sparse_file, dump_file): Don't assume that gettext preserves errno. (dump_file): Don't use `access' to determine whether a directory is readable; this isn't reliable if tar is setuid. Use `opendir' instead. Check for readdir and closedir failures. Don't dump sockets as if they were fifos; just warn and skip. --- src/create.c | 148 +++++++++++++++++++++++++++++---------------------- 1 file changed, 83 insertions(+), 65 deletions(-) diff --git a/src/create.c b/src/create.c index 6916f67..3ba6458 100644 --- a/src/create.c +++ b/src/create.c @@ -33,6 +33,8 @@ struct utimbuf }; #endif +#include + #include "common.h" #ifndef MSDOS @@ -422,7 +424,7 @@ start_header (const char *name, struct stat *st) if (!warned_once) { warned_once = 1; - WARN ((0, 0, _("Removing `%.*s' prefix from archive names"), + WARN ((0, 0, _("Removing `%.*s' prefix from member names"), (int) prefix_len, name)); } name += prefix_len; @@ -434,10 +436,19 @@ start_header (const char *name, struct stat *st) if (!warned_once) { warned_once = 1; - WARN ((0, 0, _("Removing leading `/' from archive names"))); + WARN ((0, 0, _("Removing leading `/' from member names"))); } name++; } + + { + static int warned_once; + if (! warned_once && contains_dot_dot (name)) + { + warned_once = 1; + WARN ((0, 0, _("Member names contain `..'"))); + } + } } if (sizeof header->header.name <= strlen (name)) @@ -767,17 +778,18 @@ finish_sparse_file (int file, off_t *sizeleft, off_t fullsize, char *name) ERROR ((0, 0, _("Wrote %s of %s bytes to file %s"), STRINGIFY_BIGINT (fullsize - *sizeleft, buf1), - STRINGIFY_BIGINT (fullsize, buf2), - name)); + STRINGIFY_BIGINT (fullsize, buf2), quote (name))); break; } if (lseek (file, sparsearray[sparse_index++].offset, SEEK_SET) < 0) { char buf[UINTMAX_STRSIZE_BOUND]; - ERROR ((0, errno, _("lseek error at byte %s in file %s"), - STRINGIFY_BIGINT (sparsearray[sparse_index - 1].offset, buf), - name)); + int e = errno; + ERROR ((0, e, _("lseek error at byte %s in file %s"), + STRINGIFY_BIGINT (sparsearray[sparse_index - 1].offset, + buf), + quote (name))); break; } @@ -804,10 +816,11 @@ finish_sparse_file (int file, off_t *sizeleft, off_t fullsize, char *name) if (count < 0) { char buf[UINTMAX_STRSIZE_BOUND]; - ERROR ((0, errno, + int e = errno; + ERROR ((0, e, _("Read error at byte %s, reading %lu bytes, in file %s"), STRINGIFY_BIGINT (fullsize - *sizeleft, buf), - (unsigned long) bufsize, name)); + (unsigned long) bufsize, quote (name))); return 1; } bufsize -= count; @@ -828,11 +841,11 @@ finish_sparse_file (int file, off_t *sizeleft, off_t fullsize, char *name) if (count < 0) { char buf[UINTMAX_STRSIZE_BOUND]; - - ERROR ((0, errno, + int e = errno; + ERROR ((0, e, _("Read error at byte %s, reading %lu bytes, in file %s"), STRINGIFY_BIGINT (fullsize - *sizeleft, buf), - (unsigned long) bufsize, name)); + (unsigned long) bufsize, quote (name))); return 1; } #if 0 @@ -843,8 +856,7 @@ finish_sparse_file (int file, off_t *sizeleft, off_t fullsize, char *name) if (count != bufsize) { ERROR ((0, 0, - _("File %s shrunk, padding with zeros"), - name)); + _("File %s shrunk, padding with zeros"), quote (name))); return 1; } start = find_next_block (); @@ -950,9 +962,10 @@ dump_file (char *p, int top_level, dev_t parent_device) if (deref_stat (dereference_option, p, ¤t_stat) != 0) { - WARN ((0, errno, _("Cannot add file %s"), p)); - if (!ignore_failed_read_option) - exit_status = TAREXIT_FAILURE; + if (ignore_failed_read_option) + stat_error (p); + else + stat_warn (p); return; } @@ -982,7 +995,7 @@ dump_file (char *p, int top_level, dev_t parent_device) && (!after_date_option || current_stat.st_ctime < newer_ctime_option)) { if (0 < top_level) - WARN ((0, 0, _("%s: is unchanged; not dumped"), p)); + WARN ((0, 0, _("%s is unchanged; not dumped"), quote (p))); /* FIXME: recheck this return. */ return; } @@ -992,7 +1005,7 @@ dump_file (char *p, int top_level, dev_t parent_device) if (ar_dev && current_stat.st_dev == ar_dev && current_stat.st_ino == ar_ino) { - WARN ((0, 0, _("%s is the archive; not dumped"), p)); + WARN ((0, 0, _("%s is the archive; not dumped"), quote (p))); return; } #endif @@ -1006,18 +1019,15 @@ dump_file (char *p, int top_level, dev_t parent_device) size_t len; dev_t our_device = current_stat.st_dev; - /* If this tar program is installed suid root, like for Amanda, the - access might look like denied, while it is not really. - - FIXME: I have the feeling this test is done too early. Couldn't it - just be bundled in later actions? I guess that the proper support - of --ignore-failed-read is the key of the current writing. */ + errno = 0; - if (access (p, R_OK) == -1 && geteuid () != 0) + directory = opendir (p); + if (! directory) { - WARN ((0, errno, _("Cannot add directory %s"), p)); - if (!ignore_failed_read_option) - exit_status = TAREXIT_FAILURE; + if (ignore_failed_read_option) + opendir_warn (p); + else + opendir_error (p); return; } @@ -1134,24 +1144,16 @@ dump_file (char *p, int top_level, dev_t parent_device) && parent_device != current_stat.st_dev) { if (verbose_option) - WARN ((0, 0, _("%s: On a different filesystem; not dumped"), p)); + WARN ((0, 0, _("%s is on a different filesystem; not dumped"), + quote (p))); return; } /* Now output all the files in the directory. */ - errno = 0; - - directory = opendir (p); - if (!directory) - { - ERROR ((0, errno, _("Cannot open directory %s"), p)); - return; - } - /* FIXME: Should speed this up by cd-ing into the dir. */ - while (entry = readdir (directory), entry) + while (errno = 0, (entry = readdir (directory))) { /* Skip `.', `..', and excluded file names. */ @@ -1168,7 +1170,16 @@ dump_file (char *p, int top_level, dev_t parent_device) dump_file (namebuf, 0, our_device); } - closedir (directory); + if (errno) + { + if (ignore_failed_read_option) + readdir_warn (p); + else + readdir_error (p); + } + + if (closedir (directory) != 0) + closedir_error (p); free (namebuf); if (atime_preserve_option) utime (p, &restore_times); @@ -1229,7 +1240,7 @@ dump_file (char *p, int top_level, dev_t parent_device) if (remove_files_option) if (unlink (p) == -1) - ERROR ((0, errno, _("Cannot remove %s"), p)); + unlink_error (p); /* We dumped it. */ return; @@ -1364,11 +1375,12 @@ dump_file (char *p, int top_level, dev_t parent_device) if (f < 0) { if (! top_level && errno == ENOENT) - WARN ((0, 0, _("%s: file removed before we read it"), p)); + WARN ((0, 0, _("File %s removed before we read it"), + quote (p))); + else if (ignore_failed_read_option) + open_warn (p); else - WARN ((0, errno, _("Cannot add file %s"), p)); - if (!ignore_failed_read_option) - exit_status = TAREXIT_FAILURE; + open_error (p); return; } } @@ -1416,7 +1428,8 @@ dump_file (char *p, int top_level, dev_t parent_device) if (save_typeflag == GNUTYPE_SPARSE) { if (f < 0 - || finish_sparse_file (f, &sizeleft, current_stat.st_size, p)) + || finish_sparse_file (f, &sizeleft, + current_stat.st_size, p)) goto padit; } else @@ -1448,11 +1461,12 @@ dump_file (char *p, int top_level, dev_t parent_device) if (count < 0) { char buf[UINTMAX_STRSIZE_BOUND]; - ERROR ((0, errno, + int e = errno; + ERROR ((0, e, _("Read error at byte %s, reading %lu bytes, in file %s"), STRINGIFY_BIGINT (current_stat.st_size - sizeleft, buf), - (unsigned long) bufsize, p)); + (unsigned long) bufsize, quote (p))); goto padit; } sizeleft -= count; @@ -1468,7 +1482,7 @@ dump_file (char *p, int top_level, dev_t parent_device) char buf[UINTMAX_STRSIZE_BOUND]; ERROR ((0, 0, _("File %s shrunk by %s bytes, padding with zeros"), - p, STRINGIFY_BIGINT (sizeleft, buf))); + quote (p), STRINGIFY_BIGINT (sizeleft, buf))); goto padit; /* short read */ } } @@ -1480,18 +1494,18 @@ dump_file (char *p, int top_level, dev_t parent_device) { struct stat final_stat; if (fstat (f, &final_stat) != 0) - ERROR ((0, errno, "%s: fstat", p)); + stat_error (p); else if (final_stat.st_ctime != original_ctime) - ERROR ((0, 0, _("%s: file changed as we read it"), p)); + ERROR ((0, 0, _("File %s changed as we read it"), quote (p))); if (close (f) != 0) - ERROR ((0, errno, _("%s: close"), p)); + close_error (p); if (atime_preserve_option) utime (p, &restore_times); } if (remove_files_option) { if (unlink (p) == -1) - ERROR ((0, errno, _("Cannot remove %s"), p)); + unlink_error (p); } return; @@ -1526,9 +1540,10 @@ dump_file (char *p, int top_level, dev_t parent_device) size = readlink (p, buffer, PATH_MAX + 1); if (size < 0) { - WARN ((0, errno, _("Cannot add file %s"), p)); - if (!ignore_failed_read_option) - exit_status = TAREXIT_FAILURE; + if (ignore_failed_read_option) + readlink_warn (p); + else + readlink_error (p); return; } buffer[size] = '\0'; @@ -1545,7 +1560,7 @@ dump_file (char *p, int top_level, dev_t parent_device) if (remove_files_option) { if (unlink (p) == -1) - ERROR ((0, errno, _("Cannot remove %s"), p)); + unlink_error (p); } return; } @@ -1554,16 +1569,18 @@ dump_file (char *p, int top_level, dev_t parent_device) type = CHRTYPE; else if (S_ISBLK (current_stat.st_mode)) type = BLKTYPE; - else if (S_ISFIFO (current_stat.st_mode) - || S_ISSOCK (current_stat.st_mode)) + else if (S_ISFIFO (current_stat.st_mode)) type = FIFOTYPE; -#ifdef S_ISDOOR + else if (S_ISSOCK (current_stat.st_mode)) + { + WARN ((0, 0, _("%s: socket ignored"), quotearg_colon (p))); + return; + } else if (S_ISDOOR (current_stat.st_mode)) { - WARN ((0, 0, _("%s: door ignored"), p)); + WARN ((0, 0, _("%s: door ignored"), quotearg_colon (p))); return; } -#endif else goto unknown; } @@ -1585,10 +1602,11 @@ dump_file (char *p, int top_level, dev_t parent_device) if (remove_files_option) { if (unlink (p) == -1) - ERROR ((0, errno, _("Cannot remove %s"), p)); + unlink_error (p); } return; unknown: - ERROR ((0, 0, _("%s: Unknown file type; file ignored"), p)); + ERROR ((0, 0, _("%s: Unknown file type; file ignored"), + quotearg_colon (p))); } -- 2.44.0