November 2010 - Pacman-dev - lists.archlinux.org

[pacman-dev] pkgsum - Checksum package files against installed files
by Andre "Osku" Schmidt 08 Nov '10

08 Nov '10

Hello, once upon a time someone at #archlinux did `make install` and i wanted to know if it overwrote any system files (cause it was not /usr/local he used). so i hacked this little script to checksum files in package against installed files. and today someone even wanted this kind of tool at the channel, and lastly allanmademeposthere :P Usage: pkgsum <packagename> it also reads a lazy VERBOSE variable: 0 (default) = print only results 1 = print also not matching checksums 2 = print also all files if anyone finds bugs, improvements, etc. please fix it! :P cheers .andre ps. i dont think that pkgsum fits as name 100% but for now its sufficient enough for me (tm)

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[pacman-dev] Which BSD?
by Allan McRae 08 Nov '10

08 Nov '10

Hi, Can the people who run pacman on some flavor of BSD let me know what type you use? I would like to install a relevant version in a VM to test out some changes to pacman. Allan

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[pacman-dev] [PATCH] Support reading package args from stdin
by Dave Reisner 05 Nov '10

05 Nov '10

Only occurs if no arguments were provided directly. Arguments can be separated by any amount of valid whitespace. This allows for piping into pacman from other programs or from itself, e.g.: pacman -Qdtq | pacman -Rs This is better than using xargs, as xargs will not reconnect stdin to the terminal. The above operation performed using xargs would require the --noconfirm flag to be passed to pacman. Signed-off-by: Dave Reisner <d(a)falconindy.com> --- Additional cleanup at Dan's request, and added documentation to man page wrt to this feature. Woo, documentation. doc/pacman.8.txt | 5 +++++ src/pacman/pacman.c | 34 ++++++++++++++++++++++++++++++++++ 2 files changed, 39 insertions(+), 0 deletions(-) diff --git a/doc/pacman.8.txt b/doc/pacman.8.txt index 4bdb3f9..418ddfc 100644 --- a/doc/pacman.8.txt +++ b/doc/pacman.8.txt @@ -25,6 +25,11 @@ Since version 3.0.0, pacman has been the frontend to linkman:libalpm[3], the ``Arch Linux Package Management'' library. This library allows alternative front ends to be written (for instance, a GUI front end). +Invoking pacman involves specifying an operation with any potential options +and targets to operate on. A 'target' is usually a package name, filename, URL, +or a search string. Targets can be provided as arguments to pacman and/or +passed through standard input. + Operations ---------- diff --git a/src/pacman/pacman.c b/src/pacman/pacman.c index 15abecc..39390a5 100644 --- a/src/pacman/pacman.c +++ b/src/pacman/pacman.c @@ -26,6 +26,7 @@ #define PACKAGE_VERSION GIT_VERSION #endif +#include <ctype.h> /* isspace */ #include <stdlib.h> /* atoi */ #include <stdio.h> #include <limits.h> @@ -1305,6 +1306,39 @@ int main(int argc, char *argv[]) cleanup(ret); } + /* we also support reading targets from stdin */ + if(!isatty(fileno(stdin))) { + char line[PATH_MAX]; + int i = 0; + while(i < PATH_MAX && (line[i] = fgetc(stdin)) != EOF) { + if(isspace((unsigned char)line[i])) { + /* avoid adding zero length arg when multiple spaces separate args */ + if(i > 0) { + line[i] = '\0'; + pm_targets = alpm_list_add(pm_targets, strdup(line)); + i = 0; + } + } else { + i++; + } + } + /* check for buffer overflow */ + if (i >= PATH_MAX) { + pm_printf(PM_LOG_ERROR, _("buffer overflow detected in arg parsing\n")); + cleanup(EXIT_FAILURE); + } + + /* end of stream -- check for data still in line buffer */ + if(i > 0) { + line[i] = '\0'; + pm_targets = alpm_list_add(pm_targets, strdup(line)); + } + if (!freopen(ctermid(NULL), "r", stdin)) { + pm_printf(PM_LOG_ERROR, _("failed to reopen stdin for reading: (%s)\n"), + strerror(errno)); + } + } + /* parse the config file */ ret = parseconfig(config->configfile); if(ret != 0) { -- 1.7.3.2

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[pacman-dev] [RFC] New member selection when installing group
by Xavier Chantry 05 Nov '10

05 Nov '10

One part of what's on http://code.toofishes.net/cgit/xavier/pacman.git/log/?h=working is about proposing a new interactive selection for installing groups. I did not like the old one, because I don't want to answer 50 questions when I install one group with 50 members. This is ugly, and the selection is not easily reproducible, for example you cannot easily copy/paste the answers of one run to another. I think a text frontend really sucks for this kind of workflow, a graphical or at least ncurses frontend would do much better. But my new provision selection inspired to both Jakob and Dan that we could have the same for groups, so I went ahead and implemented it over the weekend. $ pacman -S base-devel :: There are 11 members in group base-devel: :: Repository testing 1) make :: Repository core 2) autoconf 3) automake 4) bison 5) fakeroot 6) flex 7) gcc 8) libtool 9) m4 10) patch 11) pkg-config Which ones do you want to install? Enter a number (default=all): Multiple choices are possible, separated by spaces. Either single number or a range a-b. Both single numbers and range can be negated with ^ prefix. Choices are applied successively, so each choice override previous ones (in case of conflict). If first choice is negative, all targets are implicitly selected, otherwise no target is implicitly selected. Examples : 1) 3 6 8 : install automake, flex and libtool 2) 2-11 : install all targets in core repo 3) ^1 or 1-11 ^1 : install everything but make (like 2)) 4) ^2-11 : install everything but targets 2-11, i.e. only testing/make is left No idea how practical / user-friendly it is, so feedback and testing welcome.

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[pacman-dev] [PATCH] Support reading package args from stdin
by Dave Reisner 05 Nov '10

05 Nov '10

Only occurs if no arguments were provided directly. Arguments can be separated by any amount of valid whitespace. This allows for piping into pacman from other programs or from itself, e.g.: pacman -Qdtq | pacman -Rs This is better than using xargs, as xargs will not reconnect stdin to the terminal. The above operation performed using xargs would require the --noconfirm flag to be passed to pacman. Signed-off-by: Dave Reisner <d(a)falconindy.com> --- Resending as per Allan's request with modifications from the origin 7/24 submission. Changes: * Check return value of freopen * Assign '\0' instead of 0 to null terminate * Use post-increment instead of pre-increment * Check for buffer overflow condition (not convinced my method is reasonable) * Dynamically find stdin's FD instead of assuming it's 1 * Use PATH_MAX instead of BUFSIZ Concerns: * The verbiage I've used in the new strings is probably not ideal. src/pacman/pacman.c | 33 +++++++++++++++++++++++++++++++++ 1 files changed, 33 insertions(+), 0 deletions(-) diff --git a/src/pacman/pacman.c b/src/pacman/pacman.c index 15abecc..e078aab 100644 --- a/src/pacman/pacman.c +++ b/src/pacman/pacman.c @@ -26,6 +26,7 @@ #define PACKAGE_VERSION GIT_VERSION #endif +#include <ctype.h> /* isspace */ #include <stdlib.h> /* atoi */ #include <stdio.h> #include <limits.h> @@ -1305,6 +1306,38 @@ int main(int argc, char *argv[]) cleanup(ret); } + /* read package arguments from stdin if we have none yet */ + if(!pm_targets && !isatty(fileno(stdin))) { + char line[PATH_MAX]; + int i = 0; + while(i < PATH_MAX && (line[i] = fgetc(stdin)) != EOF) { + if(isspace((unsigned char)line[i])) { + line[i] = '\0'; + /* avoid adding zero length arg when multiple spaces separate args */ + if(i > 0) { + pm_targets = alpm_list_add(pm_targets, strdup(line)); + i = 0; + } + } else { + i++; + } + } + /* check for buffer overflow */ + if (i >= PATH_MAX) { + pm_printf(PM_LOG_ERROR, _("buffer overflow detected in arg parsing\n")); + cleanup(EXIT_FAILURE); + } + + /* end of stream -- check for data still in line buffer */ + if(i > 0) { + pm_targets = alpm_list_add(pm_targets, strdup(line)); + } + if (!freopen(ctermid(NULL), "r", stdin)) { + pm_printf(PM_LOG_ERROR, _("failed to reopen stdin for reading: (%s)\n"), + strerror(errno)); + } + } + /* parse the config file */ ret = parseconfig(config->configfile); if(ret != 0) { -- 1.7.3.2

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[pacman-dev] [PATCH] Support reading package args from stdin
by Dave Reisner 04 Nov '10

04 Nov '10

Only occurs if no arguments were provided directly. Arguments can be separated by any amount of valid whitespace. This allows for piping into pacman from other programs or from itself, e.g.: pacman -Qdtq | pacman -Rs This is better than using xargs, as xargs will not reconnect stdin to the terminal. The above operation performed using xargs would require the --noconfirm flag to be passed to pacman. Revised from the original 7/24 submission at Allan's request to check the return value of freopen(). Signed-off-by: Dave Reisner <d(a)falconindy.com> --- src/pacman/pacman.c | 27 +++++++++++++++++++++++++++ 1 files changed, 27 insertions(+), 0 deletions(-) diff --git a/src/pacman/pacman.c b/src/pacman/pacman.c index 15abecc..6f40a97 100644 --- a/src/pacman/pacman.c +++ b/src/pacman/pacman.c @@ -26,6 +26,7 @@ #define PACKAGE_VERSION GIT_VERSION #endif +#include <ctype.h> /* isspace */ #include <stdlib.h> /* atoi */ #include <stdio.h> #include <limits.h> @@ -1305,6 +1306,32 @@ int main(int argc, char *argv[]) cleanup(ret); } + /* read package arguments from stdin if we have none yet */ + if(!pm_targets && !isatty(0)) { + char line[BUFSIZ]; + int i = 0; + while((line[i] = fgetc(stdin)) != EOF) { + if(isspace(line[i])) { + line[i] = 0; + /* avoid adding zero length arg when multiple spaces separate args */ + if(i > 0) { + pm_targets = alpm_list_add(pm_targets, strdup(line)); + i = 0; + } + } else { + ++i; + } + } + /* end of stream -- check for data still in line buffer */ + if(i > 0) { + pm_targets = alpm_list_add(pm_targets, strdup(line)); + } + if (!freopen(ctermid(NULL), "r", stdin)) { + pm_printf(PM_LOG_ERROR, _("failed to reopen stdin for reading: (%s)\n"), + strerror(errno)); + } + } + /* parse the config file */ ret = parseconfig(config->configfile); if(ret != 0) { -- 1.7.3.2

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