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Changes the way files without read or write permission are handled.

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Now we try to continue processing returning a warning where possible.
This commit is contained in:
Andrea Mazzoleni 2011-06-11 09:38:19 +02:00
parent ede528636f
commit f8d2c91a96
6 changed files with 52 additions and 14 deletions
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15
handle.c
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@ -112,6 +112,13 @@ int handle_create(struct snapraid_handle* handle, struct snapraid_file* file)
/* opening in sequential mode in Windows */
handle->f = open(handle->path, O_RDWR | O_CREAT | O_BINARY | O_SEQUENTIAL, 0600);
/* if failed for missing permission */
if (handle->f == -1 && errno == EACCES) {
/* retry without requesting write permission */
handle->f = open(handle->path, O_RDONLY | O_BINARY | O_SEQUENTIAL);
}
if (handle->f == -1) {
/* invalidate for error */
handle->file = 0;
@ -142,6 +149,8 @@ int handle_create(struct snapraid_handle* handle, struct snapraid_file* file)
if (ret != 0) {
if (errno == ENOSPC) {
fprintf(stderr, "Failed to grow file '%s' due lack of space.\n", handle->path);
} else if (errno == EACCES) {
fprintf(stderr, "Failed to grow file '%s' for missing write permission.\n", handle->path);
} else {
fprintf(stderr, "Error growing file '%s'. %s.\n", handle->path, strerror(errno));
}
@ -150,7 +159,11 @@ int handle_create(struct snapraid_handle* handle, struct snapraid_file* file)
} else if (handle->st.st_size > file->size) {
ret = ftruncate(handle->f, file->size);
if (ret != 0) {
fprintf(stderr, "Error truncating file '%s'. %s.\n", handle->path, strerror(errno));
if (errno == EACCES) {
fprintf(stderr, "Failed to truncate file '%s' for missing write permission.\n", handle->path);
} else {
fprintf(stderr, "Error truncating file '%s'. %s.\n", handle->path, strerror(errno));
}
return -1;
}
}