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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/cvs/repository.c	Lines:	50	79	63.3 %
Date:	2017-11-07	Branches:	34	67	50.7 %


/*	$OpenBSD: repository.c,v 1.25 2017/05/31 16:18:20 joris Exp $	*/
/*
 * Copyright (c) 2006 Joris Vink <joris@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/stat.h>

#include <errno.h>
#include <fcntl.h>
#include <pwd.h>
#include <string.h>
#include <unistd.h>

#include "cvs.h"

struct wklhead repo_locks;

void
cvs_repository_unlock(const char *repo)
{
	char fpath[PATH_MAX];

	cvs_log(LP_TRACE, "cvs_repository_unlock(%s)", repo);

	(void)xsnprintf(fpath, sizeof(fpath), "%s/%s", repo, CVS_LOCK);

	if (unlink(fpath) == -1 && errno != ENOENT)
		cvs_log(LP_ERR, "warning: failed to unlink %s", fpath);
}

void
cvs_repository_lock(const char *repo, int wantlock)
{
	int i;
	uid_t myuid;
	struct stat st;
	char fpath[PATH_MAX];
	struct passwd *pw;

	if (cvs_noexec == 1 || cvs_readonlyfs == 1)
		return;

	cvs_log(LP_TRACE, "cvs_repository_lock(%s, %d)", repo, wantlock);

	(void)xsnprintf(fpath, sizeof(fpath), "%s/%s", repo, CVS_LOCK);

	myuid = getuid();

	for (i = 0; i < CVS_LOCK_TRIES; i++) {
		if (cvs_quit)
			fatal("received signal %d", sig_received);

		if (stat(fpath, &st) == -1)
			break;

		if (st.st_uid == myuid)
			return;

		if ((pw = getpwuid(st.st_uid)) == NULL)
			fatal("cvs_repository_lock: %s", strerror(errno));

		cvs_log(LP_NOTICE, "waiting for %s's lock in '%s'",
		    pw->pw_name, repo);
		sleep(CVS_LOCK_SLEEP);
	}

	if (i == CVS_LOCK_TRIES)
		fatal("maximum wait time for lock inside '%s' reached", repo);

	if (wantlock == 0)
		return;

	if ((i = open(fpath, O_WRONLY|O_CREAT|O_TRUNC, 0755)) < 0) {
		if (errno == EEXIST)
			fatal("cvs_repository_lock: somebody beat us");
		else
			fatal("cvs_repository_lock: %s: %s",
			    fpath, strerror(errno));
	}

	(void)close(i);
	worklist_add(fpath, &repo_locks);
}

void
cvs_repository_getdir(const char *dir, const char *wdir,
	struct cvs_flisthead *fl, struct cvs_flisthead *dl, int flags)
{
	int type;
	DIR *dirp;
	struct stat st;
	struct dirent *dp;
	char *s, fpath[PATH_MAX], rpath[PATH_MAX];

	if ((dirp = opendir(dir)) == NULL)
		fatal("cvs_repository_getdir: failed to open '%s'", dir);

	while ((dp = readdir(dirp)) != NULL) {
		if (!strcmp(dp->d_name, ".") ||
		    !strcmp(dp->d_name, "..") ||
		    !strcmp(dp->d_name, CVS_LOCK))
			continue;

		(void)xsnprintf(fpath, PATH_MAX, "%s/%s", wdir, dp->d_name);
		(void)xsnprintf(rpath, PATH_MAX, "%s/%s", dir, dp->d_name);

		if (!TAILQ_EMPTY(&checkout_ign_pats)) {
			if ((s = strrchr(fpath, ',')) != NULL)
				*s = '\0';
			if (cvs_file_chkign(fpath))
				continue;
			if (s != NULL)
				*s = ',';
		}

		/*
		 * nfs and afs will show d_type as DT_UNKNOWN
		 * for files and/or directories so when we encounter
		 * this we call lstat() on the path to be sure.
		 */
		if (dp->d_type == DT_UNKNOWN) {
			if (lstat(rpath, &st) == -1)
				fatal("'%s': %s", rpath, strerror(errno));

			switch (st.st_mode & S_IFMT) {
			case S_IFDIR:
				type = CVS_DIR;
				break;
			case S_IFREG:
				type = CVS_FILE;
				break;
			default:
				fatal("Unknown file type in repository");
			}
		} else {
			switch (dp->d_type) {
			case DT_DIR:
				type = CVS_DIR;
				break;
			case DT_REG:
				type = CVS_FILE;
				break;
			default:
				fatal("Unknown file type in repository");
			}
		}

		if (!(flags & REPOSITORY_DODIRS) && type == CVS_DIR) {
			if (strcmp(dp->d_name, CVS_PATH_ATTIC))
				continue;
		}

		switch (type) {
		case CVS_DIR:
			if (!strcmp(dp->d_name, CVS_PATH_ATTIC)) {
				cvs_repository_getdir(rpath, wdir, fl, dl,
				    REPOSITORY_IS_ATTIC);
			} else {
				cvs_file_get(fpath, 0, dl, CVS_DIR);
			}
			break;
		case CVS_FILE:
			if ((s = strrchr(fpath, ',')) != NULL &&
			    s != fpath && !strcmp(s, RCS_FILE_EXT)) {
				*s = '\0';
				cvs_file_get(fpath,
				    (flags & REPOSITORY_IS_ATTIC) ?
				    FILE_INSIDE_ATTIC : 0, fl, CVS_FILE);
			}
			break;
		default:
			fatal("type %d unknown, shouldn't happen", type);
		}
	}

	(void)closedir(dirp);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: repository.c,v 1.25 2017/05/31 16:18:20 joris Exp $ */
2			/*
3			* Copyright (c) 2006 Joris Vink <joris@openbsd.org>
4			*
5			* Permission to use, copy, modify, and distribute this software for any
6			* purpose with or without fee is hereby granted, provided that the above
7			* copyright notice and this permission notice appear in all copies.
8			*
9			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16			*/
17
18			#include <sys/stat.h>
19
20			#include <errno.h>
21			#include <fcntl.h>
22			#include <pwd.h>
23			#include <string.h>
24			#include <unistd.h>
25
26			#include "cvs.h"
27
28			struct wklhead repo_locks;
29
30			void
31			cvs_repository_unlock(const char *repo)
32			{
33		44	char fpath[PATH_MAX];
34
35		22	cvs_log(LP_TRACE, "cvs_repository_unlock(%s)", repo);
36
37		22	(void)xsnprintf(fpath, sizeof(fpath), "%s/%s", repo, CVS_LOCK);
38
39	✓✓✗✓	34	if (unlink(fpath) == -1 && errno != ENOENT)
40			cvs_log(LP_ERR, "warning: failed to unlink %s", fpath);
41		22	}
42
43			void
44			cvs_repository_lock(const char *repo, int wantlock)
45			{
46			int i;
47			uid_t myuid;
48		142	struct stat st;
49		71	char fpath[PATH_MAX];
50			struct passwd *pw;
51
52	✓✓	71	if (cvs_noexec == 1 \|\| cvs_readonlyfs == 1)
53		1	return;
54
55		70	cvs_log(LP_TRACE, "cvs_repository_lock(%s, %d)", repo, wantlock);
56
57		70	(void)xsnprintf(fpath, sizeof(fpath), "%s/%s", repo, CVS_LOCK);
58
59		70	myuid = getuid();
60
61	✓✗	140	for (i = 0; i < CVS_LOCK_TRIES; i++) {
62	✗✓	70	if (cvs_quit)
63			fatal("received signal %d", sig_received);
64
65	✓✓	70	if (stat(fpath, &st) == -1)
66			break;
67
68	✓✗	1	if (st.st_uid == myuid)
69		1	return;
70
71			if ((pw = getpwuid(st.st_uid)) == NULL)
72			fatal("cvs_repository_lock: %s", strerror(errno));
73
74			cvs_log(LP_NOTICE, "waiting for %s's lock in '%s'",
75			pw->pw_name, repo);
76			sleep(CVS_LOCK_SLEEP);
77			}
78
79	✗✓	69	if (i == CVS_LOCK_TRIES)
80			fatal("maximum wait time for lock inside '%s' reached", repo);
81
82	✓✓	69	if (wantlock == 0)
83		55	return;
84
85	✗✓	14	if ((i = open(fpath, O_WRONLY\|O_CREAT\|O_TRUNC, 0755)) < 0) {
86			if (errno == EEXIST)
87			fatal("cvs_repository_lock: somebody beat us");
88			else
89			fatal("cvs_repository_lock: %s: %s",
90			fpath, strerror(errno));
91			}
92
93		14	(void)close(i);
94		14	worklist_add(fpath, &repo_locks);
95		85	}
96
97			void
98			cvs_repository_getdir(const char dir, const char wdir,
99			struct cvs_flisthead fl, struct cvs_flisthead dl, int flags)
100			{
101			int type;
102			DIR *dirp;
103		76	struct stat st;
104			struct dirent *dp;
105		38	char *s, fpath[PATH_MAX], rpath[PATH_MAX];
106
107	✗✓	38	if ((dirp = opendir(dir)) == NULL)
108			fatal("cvs_repository_getdir: failed to open '%s'", dir);
109
110	✓✓	189	while ((dp = readdir(dirp)) != NULL) {
111	✓✓✓✓	226	if (!strcmp(dp->d_name, ".") \|\|
112	✓✓	113	!strcmp(dp->d_name, "..") \|\|
113		75	!strcmp(dp->d_name, CVS_LOCK))
114			continue;
115
116		71	(void)xsnprintf(fpath, PATH_MAX, "%s/%s", wdir, dp->d_name);
117		71	(void)xsnprintf(rpath, PATH_MAX, "%s/%s", dir, dp->d_name);
118
119	✗✓	71	if (!TAILQ_EMPTY(&checkout_ign_pats)) {
120			if ((s = strrchr(fpath, ',')) != NULL)
121			*s = '\0';
122			if (cvs_file_chkign(fpath))
123			continue;
124			if (s != NULL)
125			*s = ',';
126			}
127
128			/*
129			* nfs and afs will show d_type as DT_UNKNOWN
130			* for files and/or directories so when we encounter
131			* this we call lstat() on the path to be sure.
132			*/
133	✗✓	71	if (dp->d_type == DT_UNKNOWN) {
134			if (lstat(rpath, &st) == -1)
135			fatal("'%s': %s", rpath, strerror(errno));
136
137			switch (st.st_mode & S_IFMT) {
138			case S_IFDIR:
139			type = CVS_DIR;
140			break;
141			case S_IFREG:
142			type = CVS_FILE;
143			break;
144			default:
145			fatal("Unknown file type in repository");
146			}
147			} else {
148	✓✓✗	71	switch (dp->d_type) {
149			case DT_DIR:
150			type = CVS_DIR;
151		16	break;
152			case DT_REG:
153			type = CVS_FILE;
154		55	break;
155			default:
156			fatal("Unknown file type in repository");
157			}
158			}
159
160	✗✓	71	if (!(flags & REPOSITORY_DODIRS) && type == CVS_DIR) {
161			if (strcmp(dp->d_name, CVS_PATH_ATTIC))
162			continue;
163			}
164
165	✓✓✗	71	switch (type) {
166			case CVS_DIR:
167	✗✓	16	if (!strcmp(dp->d_name, CVS_PATH_ATTIC)) {
168			cvs_repository_getdir(rpath, wdir, fl, dl,
169			REPOSITORY_IS_ATTIC);
170			} else {
171		16	cvs_file_get(fpath, 0, dl, CVS_DIR);
172			}
173			break;
174			case CVS_FILE:
175	✗✓✗✓	110	if ((s = strrchr(fpath, ',')) != NULL &&
176	✗✓	110	s != fpath && !strcmp(s, RCS_FILE_EXT)) {
177		55	*s = '\0';
178		55	cvs_file_get(fpath,
179		55	(flags & REPOSITORY_IS_ATTIC) ?
180			FILE_INSIDE_ATTIC : 0, fl, CVS_FILE);
181		55	}
182			break;
183			default:
184			fatal("type %d unknown, shouldn't happen", type);
185			}
186			}
187
188		38	(void)closedir(dirp);
189		38	}