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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 00:53:35 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 00:53:35 +0000 |
commit | 69c6a41ffb878ef98c9378ed4b1634a404cfaa7f (patch) | |
tree | b2a4f704565d62fbb129ab9dc3b35977c50e6e7f /src/contrib/files.c | |
parent | Initial commit. (diff) | |
download | knot-d02c1c4ad3b5dddb2ceca2c451a5b417770810ef.tar.xz knot-d02c1c4ad3b5dddb2ceca2c451a5b417770810ef.zip |
Adding upstream version 2.7.6.upstream/2.7.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/contrib/files.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/src/contrib/files.c b/src/contrib/files.c new file mode 100644 index 0000000..3181386 --- /dev/null +++ b/src/contrib/files.c @@ -0,0 +1,134 @@ +/* Copyright (C) 2016 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include <assert.h> +#include <dirent.h> +#include <fcntl.h> +#include <ftw.h> +#include <stdlib.h> +#include <string.h> +#include <sys/stat.h> +#include <unistd.h> + +#include "contrib/files.h" +#include "contrib/string.h" +#include "libknot/errcode.h" + +static int remove_file(const char *path, const struct stat *stat, int type, struct FTW *ftw) +{ + (void)stat; + (void)ftw; + if (type == FTW_DP) { + return rmdir(path); + } else { + return unlink(path); + } +} + +bool remove_path(const char *path) +{ + return (0 == nftw(path, remove_file, 1, FTW_DEPTH | FTW_PHYS)); +} + +int make_dir(const char *path, mode_t mode, bool ignore_existing) +{ + if (mkdir(path, mode) == 0) { + return KNOT_EOK; + } + + if (!ignore_existing || errno != EEXIST) { + return knot_map_errno(); + } + + assert(errno == EEXIST); + + struct stat st = { 0 }; + if (stat(path, &st) != 0) { + return knot_map_errno(); + } + + if (!S_ISDIR(st.st_mode)) { + return knot_map_errno_code(ENOTDIR); + } + + return KNOT_EOK; +} + +int make_path(const char *path, mode_t mode) +{ + if (path == NULL) { + return KNOT_EINVAL; + } + + char *dir = strdup(path); + if (dir == NULL) { + return KNOT_ENOMEM; + } + + for (char *p = strchr(dir + 1, '/'); p != NULL; p = strchr(p + 1, '/')) { + *p = '\0'; + if (mkdir(dir, mode) == -1 && errno != EEXIST) { + free(dir); + return knot_map_errno(); + } + *p = '/'; + } + + free(dir); + + return KNOT_EOK; +} + +int open_tmp_file(const char *path, char **tmp_name, FILE **file, mode_t mode) +{ + int ret; + + *tmp_name = sprintf_alloc("%s.XXXXXX", path); + if (*tmp_name == NULL) { + ret = KNOT_ENOMEM; + goto open_tmp_failed; + } + + int fd = mkstemp(*tmp_name); + if (fd < 0) { + ret = knot_map_errno(); + goto open_tmp_failed; + } + + if (fchmod(fd, mode) != 0) { + ret = knot_map_errno(); + close(fd); + unlink(*tmp_name); + goto open_tmp_failed; + } + + *file = fdopen(fd, "w"); + if (*file == NULL) { + ret = knot_map_errno(); + close(fd); + unlink(*tmp_name); + goto open_tmp_failed; + } + + return KNOT_EOK; +open_tmp_failed: + free(*tmp_name); + *tmp_name = NULL; + *file = NULL; + + assert(ret != KNOT_EOK); + return ret; +} |