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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:16:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:16:13 +0000 |
commit | e90fcc54809db2591dc083f43ef54c6ec8c60847 (patch) | |
tree | f20bc206c3c2d5d59d37c46c5cf5d53a20642556 /src/directory.c | |
parent | Initial commit. (diff) | |
download | exim4-e90fcc54809db2591dc083f43ef54c6ec8c60847.tar.xz exim4-e90fcc54809db2591dc083f43ef54c6ec8c60847.zip |
Adding upstream version 4.96.upstream/4.96upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/directory.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/src/directory.c b/src/directory.c new file mode 100644 index 0000000..1890208 --- /dev/null +++ b/src/directory.c @@ -0,0 +1,95 @@ +/************************************************* +* Exim - an Internet mail transport agent * +*************************************************/ + +/* Copyright (c) The Exim Maintainers 2010 - 2022 */ +/* Copyright (c) University of Cambridge 1995 - 2009 */ +/* See the file NOTICE for conditions of use and distribution. */ + +#include "exim.h" + + +/************************************************* +* Attempt to create a directory * +*************************************************/ + +/* All the directories that Exim ever creates for itself are within the spool +directory as defined by spool_directory. We are prepared to create as many as +necessary from that directory downwards, inclusive. However, directory creation +can also be required in appendfile and sieve filters. The making function +therefore has a parent argument, below which the new directories are to go. It +can be NULL if the name is absolute. + +If a non-root uid has been specified for exim, and we are currently running as +root, ensure the directory is owned by the non-root id if the parent is the +spool directory. + +Arguments: + parent parent directory name; if NULL the name must be absolute + name directory name within the parent that we want + mode mode for the new directory + panic if TRUE, panic on failure + +Returns: panic on failure if panic is set; otherwise return FALSE; + TRUE on success. +*/ + +BOOL +directory_make(const uschar *parent, const uschar *name, + int mode, BOOL panic) +{ +BOOL use_chown = parent == spool_directory && geteuid() == root_uid; +uschar * p; +uschar c = 1; +struct stat statbuf; +uschar * path; + +if (is_tainted(name)) + { p = US"create"; path = US name; errno = ERRNO_TAINT; goto bad; } + +if (parent) + { + path = string_sprintf("%s%s%s", parent, US"/", name); + p = path + Ustrlen(parent); + } +else + { + path = string_copy(name); + p = path + 1; + } + +/* Walk the path creating any missing directories */ + +while (c && *p) + { + while (*p && *p != '/') p++; + c = *p; + *p = '\0'; + if (Ustat(path, &statbuf) != 0) + { + if (mkdir(CS path, mode) < 0 && errno != EEXIST) + { p = US"create"; goto bad; } + + /* Set the ownership if necessary. */ + + if (use_chown && exim_chown(path, exim_uid, exim_gid)) + { p = US"set owner on"; goto bad; } + + /* It appears that any mode bits greater than 0777 are ignored by + mkdir(), at least on some operating systems. Therefore, if the mode + contains any such bits, do an explicit mode setting. */ + + if (mode & 0777000) (void) Uchmod(path, mode); + } + *p++ = c; + } + +return TRUE; + +bad: + if (panic) log_write(0, LOG_MAIN|LOG_PANIC_DIE, + "Failed to %s directory \"%s\": %s\n", p, path, exim_errstr(errno)); + return FALSE; +} + +/* End of directory.c */ |