diff options
author | Glenn L McGrath <bug1@ihug.co.nz> | 2001-02-11 04:40:23 +0300 |
---|---|---|
committer | Glenn L McGrath <bug1@ihug.co.nz> | 2001-02-11 04:40:23 +0300 |
commit | 631064613f50de2fe9cce2b679752e19c72fc58b (patch) | |
tree | 5a8904022795d758ac94619cf385d46452526cf2 /dpkg.c | |
parent | 0c9d77ccfda4103481679a12f03306512db3199f (diff) |
More style changes
Diffstat (limited to 'dpkg.c')
-rw-r--r-- | dpkg.c | 325 |
1 files changed, 175 insertions, 150 deletions
@@ -35,9 +35,13 @@ #define BUFSIZE 4096 #define DEPENDSMAX 64 /* maximum number of depends we can handle */ -#define ADMINDIR "/var/lib/dpkg" -#define STATUSFILE ADMINDIR ## "/status.udeb" -#define DPKGCIDIR ADMINDIR ## "/tmp.ci/" +static const char statusfile[] = "/var/lib/dpkg/status.udeb"; +static const char new_statusfile[] = "/var/lib/dpkg/status.udeb.new"; +static const char bak_statusfile[] = "/var/lib/dpkg/status.udeb.bak"; + +static const char dpkgcidir[] = "/var/lib/dpkg/tmp.ci/"; +static const char rm_dpkgcidir[] = "rm -rf /var/lib/dpkg/tmp.ci/"; + static const char infodir[] = "/var/lib/dpkg/info/"; static const char udpkg_quiet[] = "UDPKG_QUIET"; @@ -95,6 +99,16 @@ typedef struct package_s { struct package_s *next; } package_t; +#ifdef DODEBUG +static int do_system(const char *cmd) +{ + DPRINTF("cmd is %s\n", cmd); + return system(cmd); +} +#else +#define do_system(cmd) system(cmd) +#endif + static int package_compare(const void *p1, const void *p2) { return strcmp(((package_t *)p1)->package, @@ -111,41 +125,46 @@ static char **depends_split(const char *dependsstr) int i = 0; dependsvec[0] = 0; + if (dependsstr == 0) { + goto end; + } - if (dependsstr != 0) { - p = strdup(dependsstr); - while (*p != 0 && *p != '\n') { - if (*p != ' ') { - if (*p == ',') { - *p = 0; - dependsvec[++i] = 0; - } else - if (dependsvec[i] == 0) - dependsvec[i] = p; + p = strdup(dependsstr); + while (*p != 0 && *p != '\n') { + if (*p != ' ') { + if (*p == ',') { + *p = 0; + dependsvec[++i] = 0; } else { - *p = 0; /* eat the space... */ + if (dependsvec[i] == 0) { + dependsvec[i] = p; + } } - p++; + } else { + *p = 0; /* eat the space... */ } - *p = 0; + p++; } + *p = 0; + +end: dependsvec[i+1] = 0; return dependsvec; } +/* Topological sort algorithm: + * ordered is the output list, pkgs is the dependency graph, pkg is + * the current node + * + * recursively add all the adjacent nodes to the ordered list, marking + * each one as visited along the way + * + * yes, this algorithm looks a bit odd when all the params have the + * same type :-) + */ static void depends_sort_visit(package_t **ordered, package_t *pkgs, package_t *pkg) { - /* Topological sort algorithm: - * ordered is the output list, pkgs is the dependency graph, pkg is - * the current node - * - * recursively add all the adjacent nodes to the ordered list, marking - * each one as visited along the way - * - * yes, this algorithm looks a bit odd when all the params have the - * same type :-) - */ unsigned short i; /* mark node as processing */ @@ -164,6 +183,7 @@ static void depends_sort_visit(package_t **ordered, package_t *pkgs, newnode->next = *ordered; *ordered = newnode; #endif + pkg->next = *ordered; *ordered = pkg; @@ -178,12 +198,14 @@ static package_t *depends_sort(package_t *pkgs) package_t *ordered = NULL; package_t *pkg; - for (pkg = pkgs; pkg != 0; pkg = pkg->next) + for (pkg = pkgs; pkg != 0; pkg = pkg->next) { pkg->color = color_white; - - for (pkg = pkgs; pkg != 0; pkg = pkg->next) - if (pkg->color == color_white) + } + for (pkg = pkgs; pkg != 0; pkg = pkg->next) { + if (pkg->color == color_white) { depends_sort_visit(&ordered, pkgs, pkg); + } + } /* Leaks the old list... return the new one... */ return ordered; @@ -218,17 +240,15 @@ static package_t *depends_resolve(package_t *pkgs, void *status) if ((found = tfind(&dependpkg, &status, package_compare)) == 0 || ((chk = *(package_t **)found) && (chk->status & (status_flagok | status_statusinstalled)) != - (status_flagok | status_statusinstalled))) - { + (status_flagok | status_statusinstalled))) { + /* if it fails, we look through the list of packages we are going to * install */ for (chk = pkgs; chk != 0; chk = chk->next) { - if (strcmp(chk->package, dependsvec[i]) == 0 || - (chk->provides && + if (strcmp(chk->package, dependsvec[i]) == 0 || (chk->provides && strncmp(chk->provides, dependsvec[i], strlen(dependsvec[i])) == 0)) { if (chk->requiredcount >= DEPENDSMAX) { - fprintf(stderr, "Too many dependencies for %s\n", - chk->package); + fprintf(stderr, "Too many dependencies for %s\n", chk->package); return 0; } if (chk != pkg) { @@ -264,16 +284,16 @@ static package_t *depends_resolve(package_t *pkgs, void *status) * replacing any pre-existing entries. when a merge happens, status info * read using the status_read function is written back to the status file */ - static unsigned long status_parse(const char *line) { char *p; int i, j; unsigned long l = 0; - for (i = 0; i < 3; i++) - { - p = strchr(line, ' '); - if (p) *p = 0; + + for (i = 0; i < 3; i++) { + if ((p = strchr(line, ' ')) != NULL) { + *p = 0; + } j = 1; while (statuswords[i][j] != 0) { if (strcmp(line, statuswords[i][j]) == 0) { @@ -288,6 +308,7 @@ static unsigned long status_parse(const char *line) } line = p+1; } + return l; } @@ -313,6 +334,7 @@ static const char *status_print(unsigned long flags) return NULL; } } + return buf; } @@ -326,6 +348,7 @@ static void control_read(FILE *file, package_t *p) while ((line = get_line_from_file(file)) != NULL) { line[strlen(line)] = 0; + if (strlen(line) == 0) { break; } else @@ -359,13 +382,15 @@ static void *status_read(void) void *status = 0; package_t *m = 0, *p = 0, *t = 0; - if ((f = fopen(STATUSFILE, "r")) == NULL) { - perror(STATUSFILE); + if ((f = fopen(statusfile, "r")) == NULL) { + perror(statusfile); return 0; } + if (getenv(udpkg_quiet) == NULL) { printf("(Reading database...)\n"); } + while (!feof(f)) { m = (package_t *)xmalloc(sizeof(package_t)); memset(m, 0, sizeof(package_t)); @@ -389,7 +414,7 @@ static void *status_read(void) p->package = strdup(m->provides); t = *(package_t **)tsearch(p, &status, package_compare); - if (!(t == p)) { + if (t != p) { free(p->package); free(p); } @@ -422,18 +447,19 @@ static int status_merge(void *status, package_t *pkgs) package_t locpkg; int r = 0; - if ((fin = fopen(STATUSFILE, "r")) == NULL) { - perror(STATUSFILE); + if ((fin = fopen(statusfile, "r")) == NULL) { + perror(statusfile); return 0; } - if ((fout = fopen(STATUSFILE ".new", "w")) == NULL) { - perror(STATUSFILE ".new"); + if ((fout = fopen(new_statusfile, "w")) == NULL) { + perror(new_statusfile); return 0; } if (getenv(udpkg_quiet) == NULL) { printf("(Updating database...)\n"); } - while (((line = get_line_from_file(fin)) != NULL) && (feof(fin) != 0)) { + + while (((line = get_line_from_file(fin)) != NULL) && !feof(fin)) { line[strlen(line)] = 0; /* trim newline */ /* If we see a package header, find out if it's a package * that we have processed. if so, we skip that block for @@ -488,26 +514,13 @@ static int status_merge(void *status, package_t *pkgs) fclose(fin); fclose(fout); - r = rename(STATUSFILE, STATUSFILE ".bak"); + r = rename(statusfile, bak_statusfile); if (r == 0) { - r = rename(STATUSFILE ".new", STATUSFILE); + r = rename(new_statusfile, statusfile); } - return 0; -} - -/* - * Main udpkg implementation routines - */ -#ifdef DODEBUG -static int do_system(const char *cmd) -{ - DPRINTF("cmd is %s\n", cmd); - return system(cmd); + return 0; } -#else -#define do_system(cmd) system(cmd) -#endif static int is_file(const char *fn) { @@ -524,9 +537,11 @@ static int dpkg_doconfigure(package_t *pkg) int r; char postinst[1024]; char buf[1024]; + DPRINTF("Configuring %s\n", pkg->package); pkg->status &= status_statusmask; snprintf(postinst, sizeof(postinst), "%s%s.postinst", infodir, pkg->package); + if (is_file(postinst)) { snprintf(buf, sizeof(buf), "%s configure", postinst); if ((r = do_system(buf)) != 0) { @@ -535,7 +550,6 @@ static int dpkg_doconfigure(package_t *pkg) return 1; } } - pkg->status |= status_statusinstalled; return 0; @@ -543,80 +557,78 @@ static int dpkg_doconfigure(package_t *pkg) static int dpkg_dounpack(package_t *pkg) { - int r = 0; + int r = 0, i; char *cwd, *p; FILE *infp, *outfp; char buf[1024], buf2[1024]; - int i; char *adminscripts[] = { "prerm", "postrm", "preinst", "postinst", - "conffiles", "md5sums", "shlibs", - "templates" }; + "conffiles", "md5sums", "shlibs", "templates" }; DPRINTF("Unpacking %s\n", pkg->package); cwd = getcwd(0, 0); chdir("/"); snprintf(buf, sizeof(buf), "ar -p %s data.tar.gz|zcat|tar -xf -", pkg->file); - if (SYSTEM(buf) == 0) { - /* Installs the package scripts into the info directory */ - for (i = 0; i < sizeof(adminscripts) / sizeof(adminscripts[0]); i++) { - snprintf(buf, sizeof(buf), "%s%s/%s", - DPKGCIDIR, pkg->package, adminscripts[i]); - snprintf(buf2, sizeof(buf), "%s%s.%s", - infodir, pkg->package, adminscripts[i]); - if (copy_file(buf, buf2, TRUE, FALSE, FALSE) < 0) { - fprintf(stderr, "Cannot copy %s to %s: %s\n", - buf, buf2, strerror(errno)); - r = 1; - break; - } else { - /* ugly hack to create the list file; should - * probably do something more elegant - * - * why oh why does dpkg create the list file - * so oddly... - */ - snprintf(buf, sizeof(buf), - "ar -p %s data.tar.gz|zcat|tar -tf -", - pkg->file); - snprintf(buf2, sizeof(buf2), - "%s%s.list", infodir, pkg->package); - if ((infp = popen(buf, "r")) == NULL || - (outfp = fopen(buf2, "w")) == NULL) { - fprintf(stderr, "Cannot create %s\n", - buf2); - r = 1; - break; - } - while (fgets(buf, sizeof(buf), infp) && - !feof(infp)) { - p = buf; - if (*p == '.') p++; - if (*p == '/' && *(p+1) == '\n') { - *(p+1) = '.'; - *(p+2) = '\n'; - *(p+3) = 0; - } - if (p[strlen(p)-2] == '/') { - p[strlen(p)-2] = '\n'; - p[strlen(p)-1] = 0; - } - fputs(p, outfp); - } - fclose(infp); - fclose(outfp); + if (SYSTEM(buf) != 0) { + goto end; + } + /* Installs the package scripts into the info directory */ + for (i = 0; i < sizeof(adminscripts) / sizeof(adminscripts[0]); i++) { + snprintf(buf, sizeof(buf), "%s%s/%s", + dpkgcidir, pkg->package, adminscripts[i]); + snprintf(buf2, sizeof(buf), "%s%s.%s", + infodir, pkg->package, adminscripts[i]); + if (copy_file(buf, buf2, TRUE, FALSE, FALSE) < 0) { + fprintf(stderr, "Cannot copy %s to %s: %s\n", + buf, buf2, strerror(errno)); + r = 1; + break; + } + /* ugly hack to create the list file; should + * probably do something more elegant + * + * why oh why does dpkg create the list file + * so oddly... + */ + snprintf(buf, sizeof(buf), "ar -p %s data.tar.gz|zcat|tar -tf -", pkg->file); + snprintf(buf2, sizeof(buf2), "%s%s.list", infodir, pkg->package); + if ((infp = popen(buf, "r")) == NULL || (outfp = fopen(buf2, "w")) == NULL) { + fprintf(stderr, "Cannot create %s\n", buf2); + r = 1; + break; + } + while (fgets(buf, sizeof(buf), infp) && !feof(infp)) { + p = buf; + if (*p == '.') { + p++; + } + if ((*p == '/') && (*(p + 1) == '\n')) { + *(p + 1) = '.'; + *(p + 2) = '\n'; + *(p + 3) = 0; } + if (p[strlen(p) - 2] == '/') { + p[strlen(p) - 2] = '\n'; + p[strlen(p) - 1] = 0; + } + fputs(p, outfp); } - pkg->status &= status_wantmask; - pkg->status |= status_wantinstall; - pkg->status &= status_flagmask; - pkg->status |= status_flagok; - pkg->status &= status_statusmask; - if (r == 0) - pkg->status |= status_statusunpacked; - else - pkg->status |= status_statushalfinstalled; + fclose(infp); + fclose(outfp); + } + + pkg->status &= status_wantmask; + pkg->status |= status_wantinstall; + pkg->status &= status_flagmask; + pkg->status |= status_flagok; + pkg->status &= status_statusmask; + + if (r == 0) { + pkg->status |= status_statusunpacked; + } else { + pkg->status |= status_statushalfinstalled; } +end: chdir(cwd); return r; } @@ -638,15 +650,17 @@ static int dpkg_unpackcontrol(package_t *pkg) p = strrchr(pkg->file, '/'); if (p) p++; else p = pkg->file; p = pkg->package = strdup(p); - while (*p != 0 && *p != '_' && *p != '.') p++; + while (*p != 0 && *p != '_' && *p != '.') { + p++; + } *p = 0; cwd = getcwd(0, 0); - snprintf(buf, sizeof(buf), "%s%s", DPKGCIDIR, pkg->package); + snprintf(buf, sizeof(buf), "%s%s", dpkgcidir, pkg->package); DPRINTF("dir = %s\n", buf); + if (mkdir(buf, S_IRWXU) == 0 && chdir(buf) == 0) { - snprintf(buf, sizeof(buf), "ar -p %s control.tar.gz|zcat|tar -xf -", - pkg->file); + snprintf(buf, sizeof(buf), "ar -p %s control.tar.gz|zcat|tar -xf -", pkg->file); if (SYSTEM(buf) == 0) { if ((f = fopen("control", "r")) != NULL) { control_read(f, pkg); @@ -654,9 +668,9 @@ static int dpkg_unpackcontrol(package_t *pkg) } } } - chdir(cwd); free(cwd); + return r; } @@ -666,19 +680,19 @@ static int dpkg_unpack(package_t *pkgs) package_t *pkg; void *status = status_read(); - if (SYSTEM("rm -rf -- " DPKGCIDIR) != 0 || - mkdir(DPKGCIDIR, S_IRWXU) != 0) { + if (SYSTEM(rm_dpkgcidir) != 0 || + mkdir(dpkgcidir, S_IRWXU) != 0) { perror("mkdir"); return 1; } - for (pkg = pkgs; pkg != 0; pkg = pkg->next) { dpkg_unpackcontrol(pkg); r = dpkg_dounpack(pkg); if (r != 0) break; } status_merge(status, pkgs); - SYSTEM("rm -rf -- " DPKGCIDIR); + SYSTEM(rm_dpkgcidir); + return r; } @@ -688,18 +702,23 @@ static int dpkg_configure(package_t *pkgs) void *found; package_t *pkg; void *status = status_read(); + for (pkg = pkgs; pkg != 0 && r == 0; pkg = pkg->next) { found = tfind(pkg, &status, package_compare); + if (found == 0) { fprintf(stderr, "Trying to configure %s, but it is not installed\n", pkg->package); r = 1; - } else { - /* configure the package listed in the status file; - * not pkg, as we have info only for the latter */ + } + /* configure the package listed in the status file; + * not pkg, as we have info only for the latter + */ + else { r = dpkg_doconfigure(*(package_t **)found); } } status_merge(status, 0); + return r; } @@ -707,8 +726,9 @@ static int dpkg_install(package_t *pkgs) { package_t *p, *ordered = 0; void *status = status_read(); - if (SYSTEM("rm -rf -- " DPKGCIDIR) != 0 || - mkdir(DPKGCIDIR, S_IRWXU) != 0) { + + if (SYSTEM(rm_dpkgcidir) != 0 || + mkdir(dpkgcidir, S_IRWXU) != 0) { perror("mkdir"); return 1; } @@ -747,7 +767,8 @@ static int dpkg_install(package_t *pkgs) if (ordered != 0) { status_merge(status, pkgs); } - SYSTEM("rm -rf -- " DPKGCIDIR); + SYSTEM(rm_dpkgcidir); + return 0; } @@ -755,10 +776,12 @@ static int dpkg_remove(package_t *pkgs) { package_t *p; void *status = status_read(); + for (p = pkgs; p != 0; p = p->next) { } status_merge(status, 0); + return 0; } @@ -768,16 +791,19 @@ extern int dpkg_main(int argc, char **argv) char *s; package_t *p, *packages = NULL; char *cwd = getcwd(0, 0); + while (*++argv) { if (**argv == '-') { /* Nasty little hack to "parse" long options. */ s = *argv; - while (*s == '-') + while (*s == '-') { s++; + } opt=s[0]; } else { p = (package_t *)xmalloc(sizeof(package_t)); memset(p, 0, sizeof(package_t)); + if (**argv == '/') { p->file = *argv; } else @@ -787,11 +813,12 @@ extern int dpkg_main(int argc, char **argv) } else { p->package = strdup(*argv); } + p->next = packages; packages = p; - } - + } } + switch (opt) { case 'i': return dpkg_install(packages); @@ -801,10 +828,8 @@ extern int dpkg_main(int argc, char **argv) return dpkg_unpack(packages); case 'c': return dpkg_configure(packages); + default : + usage(dpkg_usage); + return 0; } - - /* if it falls through to here, some of the command line options were - wrong */ - usage(dpkg_usage); - return 0; }
\ No newline at end of file |