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-rw-r--r--doc/pacman.conf.5.txt10
-rw-r--r--etc/pacman.conf.in2
-rw-r--r--lib/libalpm/alpm.h4
-rw-r--r--lib/libalpm/delta.c3
-rw-r--r--lib/libalpm/delta.h3
-rw-r--r--lib/libalpm/handle.c12
-rw-r--r--lib/libalpm/handle.h2
-rw-r--r--lib/libalpm/sync.c4
-rw-r--r--src/pacman/conf.c19
-rw-r--r--src/pacman/conf.h2
10 files changed, 40 insertions, 21 deletions
diff --git a/doc/pacman.conf.5.txt b/doc/pacman.conf.5.txt
index 2c1a24b2..39132925 100644
--- a/doc/pacman.conf.5.txt
+++ b/doc/pacman.conf.5.txt
@@ -168,9 +168,13 @@ Options
Log action messages through syslog(). This will insert log entries into
+{localstatedir}/log/messages+ or equivalent.
-*UseDelta*::
- Download delta files instead of complete packages if possible. Requires
- the xdelta3 program to be installed.
+*UseDelta* [= ratio]::
+ Download delta files instead of complete packages if possible. Requires
+ the `xdelta3` program to be installed. If a ratio is specified (e.g.,
+ `0.5`), then it is used as a cutoff for determining whether to use deltas.
+ Allowed values are between `0.0` and `2.0`; sensible values are between
+ `0.2` and `0.9`. Using a value above `1.0` is not recommended. The
+ default is `0.7` if left unspecified.
*TotalDownload*::
When downloading, display the amount downloaded, download rate, ETA,
diff --git a/etc/pacman.conf.in b/etc/pacman.conf.in
index 932140f4..7f9db1b5 100644
--- a/etc/pacman.conf.in
+++ b/etc/pacman.conf.in
@@ -20,6 +20,7 @@ SyncFirst = pacman
#XferCommand = /usr/bin/curl -C - -f %u > %o
#XferCommand = /usr/bin/wget --passive-ftp -c -O %o %u
#CleanMethod = KeepInstalled
+#UseDelta = 0.7
Architecture = auto
# Pacman won't upgrade packages listed in IgnorePkg and members of IgnoreGroup
@@ -31,7 +32,6 @@ Architecture = auto
# Misc options
#UseSyslog
-#UseDelta
#TotalDownload
CheckSpace
#VerbosePkgLists
diff --git a/lib/libalpm/alpm.h b/lib/libalpm/alpm.h
index 95c817ea..9ffdebc5 100644
--- a/lib/libalpm/alpm.h
+++ b/lib/libalpm/alpm.h
@@ -535,8 +535,8 @@ const char *alpm_option_get_arch(alpm_handle_t *handle);
/** Sets the targeted architecture. */
int alpm_option_set_arch(alpm_handle_t *handle, const char *arch);
-int alpm_option_get_usedelta(alpm_handle_t *handle);
-int alpm_option_set_usedelta(alpm_handle_t *handle, int usedelta);
+double alpm_option_get_deltaratio(alpm_handle_t *handle);
+int alpm_option_set_deltaratio(alpm_handle_t *handle, double ratio);
int alpm_option_get_checkspace(alpm_handle_t *handle);
int alpm_option_set_checkspace(alpm_handle_t *handle, int checkspace);
diff --git a/lib/libalpm/delta.c b/lib/libalpm/delta.c
index 726f03c0..e3acc666 100644
--- a/lib/libalpm/delta.c
+++ b/lib/libalpm/delta.c
@@ -264,7 +264,8 @@ static alpm_list_t *find_unused(alpm_list_t *deltas, const char *to, off_t quota
alpm_list_t SYMEXPORT *alpm_pkg_unused_deltas(alpm_pkg_t *pkg)
{
ASSERT(pkg != NULL, return NULL);
- return find_unused(pkg->deltas, pkg->filename, pkg->size * MAX_DELTA_RATIO);
+ return find_unused(pkg->deltas, pkg->filename,
+ pkg->size * pkg->handle->deltaratio);
}
/** @} */
diff --git a/lib/libalpm/delta.h b/lib/libalpm/delta.h
index 1173ddfe..37f208b0 100644
--- a/lib/libalpm/delta.h
+++ b/lib/libalpm/delta.h
@@ -30,9 +30,6 @@ alpm_delta_t *_alpm_delta_dup(const alpm_delta_t *delta);
off_t _alpm_shortest_delta_path(alpm_handle_t *handle, alpm_list_t *deltas,
const char *to, alpm_list_t **path);
-/* max percent of package size to download deltas */
-#define MAX_DELTA_RATIO 0.7
-
#endif /* _ALPM_DELTA_H */
/* vim: set ts=2 sw=2 noet: */
diff --git a/lib/libalpm/handle.c b/lib/libalpm/handle.c
index 8e2e3c73..2187dca9 100644
--- a/lib/libalpm/handle.c
+++ b/lib/libalpm/handle.c
@@ -43,6 +43,7 @@ alpm_handle_t *_alpm_handle_new(void)
alpm_handle_t *handle;
CALLOC(handle, 1, sizeof(alpm_handle_t), return NULL);
+ handle->deltaratio = 0.0;
return handle;
}
@@ -252,10 +253,10 @@ const char SYMEXPORT *alpm_option_get_arch(alpm_handle_t *handle)
return handle->arch;
}
-int SYMEXPORT alpm_option_get_usedelta(alpm_handle_t *handle)
+double SYMEXPORT alpm_option_get_deltaratio(alpm_handle_t *handle)
{
CHECK_HANDLE(handle, return -1);
- return handle->usedelta;
+ return handle->deltaratio;
}
int SYMEXPORT alpm_option_get_checkspace(alpm_handle_t *handle)
@@ -597,10 +598,13 @@ int SYMEXPORT alpm_option_set_arch(alpm_handle_t *handle, const char *arch)
return 0;
}
-int SYMEXPORT alpm_option_set_usedelta(alpm_handle_t *handle, int usedelta)
+int SYMEXPORT alpm_option_set_deltaratio(alpm_handle_t *handle, double ratio)
{
CHECK_HANDLE(handle, return -1);
- handle->usedelta = usedelta;
+ if(ratio < 0.0 || ratio > 2.0) {
+ RET_ERR(handle, ALPM_ERR_WRONG_ARGS, -1);
+ }
+ handle->deltaratio = ratio;
return 0;
}
diff --git a/lib/libalpm/handle.h b/lib/libalpm/handle.h
index a64c5c9e..a090ae42 100644
--- a/lib/libalpm/handle.h
+++ b/lib/libalpm/handle.h
@@ -88,8 +88,8 @@ struct __alpm_handle_t {
/* options */
char *arch; /* Architecture of packages we should allow */
+ double deltaratio; /* Download deltas if possible; a ratio value */
int usesyslog; /* Use syslog instead of logfile? */ /* TODO move to frontend */
- int usedelta; /* Download deltas if possible */
int checkspace; /* Check disk space before installing */
alpm_siglevel_t siglevel; /* Default signature verification level */
diff --git a/lib/libalpm/sync.c b/lib/libalpm/sync.c
index 49a3f42d..6967b49b 100644
--- a/lib/libalpm/sync.c
+++ b/lib/libalpm/sync.c
@@ -318,13 +318,13 @@ static int compute_download_size(alpm_pkg_t *newpkg)
/* tell the caller that we have a partial */
ret = 1;
- } else if(handle->usedelta) {
+ } else if(handle->deltaratio > 0.0) {
off_t dltsize;
dltsize = _alpm_shortest_delta_path(handle, newpkg->deltas,
newpkg->filename, &newpkg->delta_path);
- if(newpkg->delta_path && (dltsize < newpkg->size * MAX_DELTA_RATIO)) {
+ if(newpkg->delta_path && (dltsize < newpkg->size * handle->deltaratio)) {
_alpm_log(handle, ALPM_LOG_DEBUG, "using delta size\n");
size = dltsize;
} else {
diff --git a/src/pacman/conf.c b/src/pacman/conf.c
index 7ba2791c..e1bff189 100644
--- a/src/pacman/conf.c
+++ b/src/pacman/conf.c
@@ -52,6 +52,7 @@ config_t *config_new(void)
newconfig->op = PM_OP_MAIN;
newconfig->logmask = ALPM_LOG_ERROR | ALPM_LOG_WARNING;
newconfig->configfile = strdup(CONFFILE);
+ newconfig->deltaratio = 0.0;
if(alpm_capabilities() & ALPM_CAPABILITY_SIGNATURES) {
newconfig->siglevel = ALPM_SIG_PACKAGE | ALPM_SIG_PACKAGE_OPTIONAL |
ALPM_SIG_DATABASE | ALPM_SIG_DATABASE_OPTIONAL;
@@ -397,8 +398,8 @@ static int _parse_options(const char *key, char *value,
config->verbosepkglists = 1;
pm_printf(ALPM_LOG_DEBUG, "config: verbosepkglists\n");
} else if(strcmp(key, "UseDelta") == 0) {
- config->usedelta = 1;
- pm_printf(ALPM_LOG_DEBUG, "config: usedelta\n");
+ config->deltaratio = 0.7;
+ pm_printf(ALPM_LOG_DEBUG, "config: usedelta (default 0.7)\n");
} else if(strcmp(key, "TotalDownload") == 0) {
config->totaldownload = 1;
pm_printf(ALPM_LOG_DEBUG, "config: totaldownload\n");
@@ -429,6 +430,18 @@ static int _parse_options(const char *key, char *value,
if(!config->arch) {
config_set_arch(value);
}
+ } else if(strcmp(key, "UseDelta") == 0) {
+ double ratio;
+ char *endptr;
+ ratio = strtod(value, &endptr);
+ if(*endptr != '\0' || ratio < 0.0 || ratio > 2.0) {
+ pm_printf(ALPM_LOG_ERROR,
+ _("config file %s, line %d: invalid value for '%s' : '%s'\n"),
+ file, linenum, "UseDelta", value);
+ return 1;
+ }
+ config->deltaratio = ratio;
+ pm_printf(ALPM_LOG_DEBUG, "config: usedelta = %f\n", ratio);
} else if(strcmp(key, "DBPath") == 0) {
/* don't overwrite a path specified on the command line */
if(!config->dbpath) {
@@ -605,7 +618,7 @@ static int setup_libalpm(void)
alpm_option_set_arch(handle, config->arch);
alpm_option_set_checkspace(handle, config->checkspace);
alpm_option_set_usesyslog(handle, config->usesyslog);
- alpm_option_set_usedelta(handle, config->usedelta);
+ alpm_option_set_deltaratio(handle, config->deltaratio);
alpm_option_set_ignorepkgs(handle, config->ignorepkg);
alpm_option_set_ignoregroups(handle, config->ignoregrp);
diff --git a/src/pacman/conf.h b/src/pacman/conf.h
index 325fbb64..481132fa 100644
--- a/src/pacman/conf.h
+++ b/src/pacman/conf.h
@@ -34,7 +34,7 @@ typedef struct __config_t {
unsigned short print;
unsigned short checkspace;
unsigned short usesyslog;
- unsigned short usedelta;
+ double deltaratio;
char *arch;
char *print_format;
/* unfortunately, we have to keep track of paths both here and in the library
generated by cgit v1.2.3-70-g09d2 (git 2.47.0) at 2024-11-05 07:39:09 +0000