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-rw-r--r--src/driver/tpax_amain.c94
-rw-r--r--src/driver/tpax_driver_ctx.c248
-rw-r--r--src/driver/tpax_unit_ctx.c61
-rw-r--r--src/internal/tpax_dprintf_impl.c62
-rw-r--r--src/internal/tpax_dprintf_impl.h10
-rw-r--r--src/internal/tpax_driver_impl.h112
-rw-r--r--src/internal/tpax_errinfo_impl.c45
-rw-r--r--src/internal/tpax_errinfo_impl.h80
-rw-r--r--src/internal/tpax_readlink_impl.h31
-rw-r--r--src/output/tpax_output_error.c230
-rw-r--r--src/skin/tpax_skin_default.c12
-rw-r--r--src/tpax.c12
12 files changed, 997 insertions, 0 deletions
diff --git a/src/driver/tpax_amain.c b/src/driver/tpax_amain.c
new file mode 100644
index 0000000..f71f16c
--- /dev/null
+++ b/src/driver/tpax_amain.c
@@ -0,0 +1,94 @@
+/******************************************************/
+/* tpax: a topological pax implementation */
+/* Copyright (C) 2020 Z. Gilboa */
+/* Released under GPLv2 and GPLv3; see COPYING.TPAX. */
+/******************************************************/
+
+#include <stdio.h>
+#include <unistd.h>
+#include <tpax/tpax.h>
+#include "tpax_driver_impl.h"
+#include "tpax_dprintf_impl.h"
+
+#ifndef TPAX_DRIVER_FLAGS
+#define TPAX_DRIVER_FLAGS TPAX_DRIVER_VERBOSITY_ERRORS \
+ | TPAX_DRIVER_VERBOSITY_USAGE
+#endif
+
+static const char vermsg[] = "%s%s%s (https://git.foss21.org/tpax): "
+ "version %s%d.%d.%d%s.\n"
+ "[commit reference: %s%s%s]\n";
+
+static const char * const tpax_ver_color[6] = {
+ "\x1b[1m\x1b[35m","\x1b[0m",
+ "\x1b[1m\x1b[32m","\x1b[0m",
+ "\x1b[1m\x1b[34m","\x1b[0m"
+};
+
+static const char * const tpax_ver_plain[6] = {
+ "","",
+ "","",
+ "",""
+};
+
+static ssize_t tpax_version(struct tpax_driver_ctx * dctx, int fdout)
+{
+ const struct tpax_source_version * verinfo;
+ const char * const * verclr;
+
+ verinfo = tpax_source_version();
+ verclr = isatty(fdout) ? tpax_ver_color : tpax_ver_plain;
+
+ return tpax_dprintf(
+ fdout,vermsg,
+ verclr[0],dctx->program,verclr[1],
+ verclr[2],verinfo->major,verinfo->minor,
+ verinfo->revision,verclr[3],
+ verclr[4],verinfo->commit,verclr[5]);
+}
+
+static void tpax_perform_unit_actions(
+ const struct tpax_driver_ctx * dctx,
+ struct tpax_unit_ctx * uctx)
+{
+ (void)dctx;
+ (void)uctx;
+}
+
+static int tpax_exit(struct tpax_driver_ctx * dctx, int ret)
+{
+ tpax_output_error_vector(dctx);
+ tpax_free_driver_ctx(dctx);
+ return ret;
+}
+
+int tpax_main(char ** argv, char ** envp, const struct tpax_fd_ctx * fdctx)
+{
+ int ret;
+ int fdout;
+ uint64_t flags;
+ struct tpax_driver_ctx * dctx;
+ struct tpax_unit_ctx * uctx;
+ const char ** unit;
+
+ flags = TPAX_DRIVER_FLAGS;
+ fdout = fdctx ? fdctx->fdout : STDOUT_FILENO;
+
+ if ((ret = tpax_get_driver_ctx(argv,envp,flags,fdctx,&dctx)))
+ return (ret == TPAX_USAGE)
+ ? !argv || !argv[0] || !argv[1]
+ : TPAX_ERROR;
+
+ if (dctx->cctx->drvflags & TPAX_DRIVER_VERSION)
+ if ((tpax_version(dctx,fdout)) < 0)
+ return tpax_exit(dctx,TPAX_ERROR);
+
+ for (unit=dctx->units; *unit; unit++) {
+ if (!(tpax_get_unit_ctx(dctx,*unit,&uctx))) {
+ tpax_perform_unit_actions(dctx,uctx);
+ tpax_free_unit_ctx(uctx);
+ }
+ }
+
+ return tpax_exit(dctx,dctx->errv[0] ? TPAX_ERROR : TPAX_OK);
+}
diff --git a/src/driver/tpax_driver_ctx.c b/src/driver/tpax_driver_ctx.c
new file mode 100644
index 0000000..96fe8ff
--- /dev/null
+++ b/src/driver/tpax_driver_ctx.c
@@ -0,0 +1,248 @@
+/******************************************************/
+/* tpax: a topological pax implementation */
+/* Copyright (C) 2020 Z. Gilboa */
+/* Released under GPLv2 and GPLv3; see COPYING.TPAX. */
+/******************************************************/
+
+#include <stdint.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#define ARGV_DRIVER
+
+#include <tpax/tpax.h>
+#include "tpax_version.h"
+#include "tpax_driver_impl.h"
+#include "argv/argv.h"
+
+/* package info */
+static const struct tpax_source_version tpax_src_version = {
+ TPAX_TAG_VER_MAJOR,
+ TPAX_TAG_VER_MINOR,
+ TPAX_TAG_VER_PATCH,
+ TPAX_GIT_VERSION
+};
+
+/* default fd context */
+static const struct tpax_fd_ctx tpax_default_fdctx = {
+ .fdin = STDIN_FILENO,
+ .fdout = STDOUT_FILENO,
+ .fderr = STDERR_FILENO,
+ .fdcwd = AT_FDCWD,
+ .fddst = AT_FDCWD,
+ .fdlog = (-1),
+};
+
+struct tpax_driver_ctx_alloc {
+ struct argv_meta * meta;
+ struct tpax_driver_ctx_impl ctx;
+ uint64_t guard;
+ const char * units[];
+};
+
+static uint32_t tpax_argv_flags(uint32_t flags)
+{
+ uint32_t ret = ARGV_CLONE_VECTOR;
+
+ if (flags & TPAX_DRIVER_VERBOSITY_NONE)
+ ret |= ARGV_VERBOSITY_NONE;
+
+ if (flags & TPAX_DRIVER_VERBOSITY_ERRORS)
+ ret |= ARGV_VERBOSITY_ERRORS;
+
+ if (flags & TPAX_DRIVER_VERBOSITY_STATUS)
+ ret |= ARGV_VERBOSITY_STATUS;
+
+ return ret;
+}
+
+static int tpax_driver_usage(
+ int fdout,
+ const char * program,
+ const char * arg,
+ const struct argv_option ** optv,
+ struct argv_meta * meta)
+{
+ char header[512];
+
+ snprintf(header,sizeof(header),
+ "Usage: %s [options] <file>...\n" "Options:\n",
+ program);
+
+ argv_usage(fdout,header,optv,arg);
+ argv_free(meta);
+
+ return TPAX_USAGE;
+}
+
+static struct tpax_driver_ctx_impl * tpax_driver_ctx_alloc(
+ struct argv_meta * meta,
+ const struct tpax_fd_ctx * fdctx,
+ const struct tpax_common_ctx * cctx,
+ size_t nunits)
+{
+ struct tpax_driver_ctx_alloc * ictx;
+ size_t size;
+ struct argv_entry * entry;
+ const char ** units;
+ int elements;
+
+ size = sizeof(struct tpax_driver_ctx_alloc);
+ size += (nunits+1)*sizeof(const char *);
+
+ if (!(ictx = calloc(1,size)))
+ return 0;
+
+ memcpy(&ictx->ctx.fdctx,fdctx,sizeof(*fdctx));
+ memcpy(&ictx->ctx.cctx,cctx,sizeof(*cctx));
+
+ elements = sizeof(ictx->ctx.erribuf) / sizeof(*ictx->ctx.erribuf);
+
+ ictx->ctx.errinfp = &ictx->ctx.erriptr[0];
+ ictx->ctx.erricap = &ictx->ctx.erriptr[--elements];
+
+ ictx->meta = meta;
+
+ for (entry=meta->entries,units=ictx->units; entry->fopt || entry->arg; entry++)
+ if (!entry->fopt)
+ *units++ = entry->arg;
+
+ ictx->ctx.ctx.units = ictx->units;
+ ictx->ctx.ctx.errv = ictx->ctx.errinfp;
+ return &ictx->ctx;
+}
+
+static int tpax_get_driver_ctx_fail(struct argv_meta * meta)
+{
+ argv_free(meta);
+ return -1;
+}
+
+int tpax_get_driver_ctx(
+ char ** argv,
+ char ** envp,
+ uint32_t flags,
+ const struct tpax_fd_ctx * fdctx,
+ struct tpax_driver_ctx ** pctx)
+{
+ struct tpax_driver_ctx_impl * ctx;
+ struct tpax_common_ctx cctx;
+ const struct argv_option * optv[TPAX_OPTV_ELEMENTS];
+ struct argv_meta * meta;
+ struct argv_entry * entry;
+ size_t nunits;
+ const char * program;
+
+ (void)envp;
+
+ if (!fdctx)
+ fdctx = &tpax_default_fdctx;
+
+ argv_optv_init(tpax_default_options,optv);
+
+ if (!(meta = argv_get(
+ argv,optv,
+ tpax_argv_flags(flags),
+ fdctx->fderr)))
+ return -1;
+
+ nunits = 0;
+ program = argv_program_name(argv[0]);
+ memset(&cctx,0,sizeof(cctx));
+ cctx.drvflags = flags;
+
+ if (!argv[1] && (flags & TPAX_DRIVER_VERBOSITY_USAGE))
+ return tpax_driver_usage(
+ fdctx->fderr,
+ program,
+ 0,optv,meta);
+
+ /* get options, count units */
+ for (entry=meta->entries; entry->fopt || entry->arg; entry++) {
+ if (entry->fopt) {
+ switch (entry->tag) {
+ case TAG_HELP:
+ if (flags & TPAX_DRIVER_VERBOSITY_USAGE)
+ return tpax_driver_usage(
+ fdctx->fdout,
+ program,entry->arg,
+ optv,meta);
+ break;
+
+ case TAG_VERSION:
+ cctx.drvflags |= TPAX_DRIVER_VERSION;
+ break;
+ }
+ } else
+ nunits++;
+ }
+
+ if (!(ctx = tpax_driver_ctx_alloc(meta,fdctx,&cctx,nunits)))
+ return tpax_get_driver_ctx_fail(meta);
+
+ ctx->ctx.program = program;
+ ctx->ctx.cctx = &ctx->cctx;
+
+ *pctx = &ctx->ctx;
+ return TPAX_OK;
+}
+
+static void tpax_free_driver_ctx_impl(struct tpax_driver_ctx_alloc * ictx)
+{
+ argv_free(ictx->meta);
+ free(ictx);
+}
+
+void tpax_free_driver_ctx(struct tpax_driver_ctx * ctx)
+{
+ struct tpax_driver_ctx_alloc * ictx;
+ uintptr_t addr;
+
+ if (ctx) {
+ addr = (uintptr_t)ctx - offsetof(struct tpax_driver_ctx_impl,ctx);
+ addr = addr - offsetof(struct tpax_driver_ctx_alloc,ctx);
+ ictx = (struct tpax_driver_ctx_alloc *)addr;
+ tpax_free_driver_ctx_impl(ictx);
+ }
+}
+
+const struct tpax_source_version * tpax_source_version(void)
+{
+ return &tpax_src_version;
+}
+
+int tpax_get_driver_fdctx(
+ const struct tpax_driver_ctx * dctx,
+ struct tpax_fd_ctx * fdctx)
+{
+ struct tpax_driver_ctx_impl * ictx;
+
+ ictx = tpax_get_driver_ictx(dctx);
+
+ fdctx->fdin = ictx->fdctx.fdin;
+ fdctx->fdout = ictx->fdctx.fdout;
+ fdctx->fderr = ictx->fdctx.fderr;
+ fdctx->fdlog = ictx->fdctx.fdlog;
+ fdctx->fdcwd = ictx->fdctx.fdcwd;
+ fdctx->fddst = ictx->fdctx.fddst;
+
+ return 0;
+}
+
+int tpax_set_driver_fdctx(
+ struct tpax_driver_ctx * dctx,
+ const struct tpax_fd_ctx * fdctx)
+{
+ struct tpax_driver_ctx_impl * ictx;
+
+ ictx = tpax_get_driver_ictx(dctx);
+
+ ictx->fdctx.fdin = fdctx->fdin;
+ ictx->fdctx.fdout = fdctx->fdout;
+ ictx->fdctx.fderr = fdctx->fderr;
+ ictx->fdctx.fdlog = fdctx->fdlog;
+ ictx->fdctx.fdcwd = fdctx->fdcwd;
+ ictx->fdctx.fddst = fdctx->fddst;
+
+ return 0;
+}
diff --git a/src/driver/tpax_unit_ctx.c b/src/driver/tpax_unit_ctx.c
new file mode 100644
index 0000000..a6a91b6
--- /dev/null
+++ b/src/driver/tpax_unit_ctx.c
@@ -0,0 +1,61 @@
+/******************************************************/
+/* tpax: a topological pax implementation */
+/* Copyright (C) 2020 Z. Gilboa */
+/* Released under GPLv2 and GPLv3; see COPYING.TPAX. */
+/******************************************************/
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+
+#include <tpax/tpax.h>
+#include "tpax_driver_impl.h"
+#include "tpax_errinfo_impl.h"
+
+static int tpax_free_unit_ctx_impl(struct tpax_unit_ctx_impl * ctx, int ret)
+{
+ if (ctx) {
+ free(ctx);
+ }
+
+ return ret;
+}
+
+int tpax_get_unit_ctx(
+ const struct tpax_driver_ctx * dctx,
+ const char * path,
+ struct tpax_unit_ctx ** pctx)
+{
+ struct tpax_unit_ctx_impl * ctx;
+
+ if (!dctx)
+ return TPAX_CUSTOM_ERROR(
+ dctx,TPAX_ERR_NULL_CONTEXT);
+
+ else if (!(ctx = calloc(1,sizeof(*ctx))))
+ return TPAX_BUFFER_ERROR(dctx);
+
+ tpax_driver_set_ectx(
+ dctx,0,path);
+
+ ctx->path = path;
+ ctx->uctx.path = &ctx->path;
+
+ *pctx = &ctx->uctx;
+
+ return 0;
+}
+
+void tpax_free_unit_ctx(struct tpax_unit_ctx * ctx)
+{
+ struct tpax_unit_ctx_impl * ictx;
+ uintptr_t addr;
+
+ if (ctx) {
+ addr = (uintptr_t)ctx - offsetof(struct tpax_unit_ctx_impl,uctx);
+ ictx = (struct tpax_unit_ctx_impl *)addr;
+ tpax_free_unit_ctx_impl(ictx,0);
+ }
+}
diff --git a/src/internal/tpax_dprintf_impl.c b/src/internal/tpax_dprintf_impl.c
new file mode 100644
index 0000000..5d2f5f8
--- /dev/null
+++ b/src/internal/tpax_dprintf_impl.c
@@ -0,0 +1,62 @@
+/******************************************************/
+/* tpax: a topological pax implementation */
+/* Copyright (C) 2020 Z. Gilboa */
+/* Released under GPLv2 and GPLv3; see COPYING.TPAX. */
+/******************************************************/
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+
+int tpax_dprintf(int fd, const char * fmt, ...)
+{
+ int ret;
+ int cnt;
+ int size;
+ va_list ap;
+ char * ch;
+ char * buf;
+ char chbuf[2048];
+
+ va_start(ap,fmt);
+
+ size = sizeof(chbuf);
+ buf = ((cnt = vsnprintf(chbuf,size,fmt,ap)) < size)
+ ? chbuf : malloc(cnt + 1);
+
+ va_end(ap);
+
+ if (buf == chbuf) {
+ (void)0;
+
+ } else if (buf) {
+ va_start(ap,fmt);
+ vsprintf(buf,fmt,ap);
+ va_end(ap);
+
+ } else {
+ return -1;
+ }
+
+ ret = 0;
+ ch = buf;
+
+ for (; cnt && ret>=0; ) {
+ ret = write(fd,ch,cnt);
+
+ while ((ret < 0) && (errno == EINTR))
+ ret = write(fd,ch,cnt);
+
+ ch += ret;
+ cnt -= ret;
+ }
+
+ ret = (ret < 0) ? -1 : ch - buf;
+
+ if (buf != chbuf)
+ free(buf);
+
+ return ret;
+}
diff --git a/src/internal/tpax_dprintf_impl.h b/src/internal/tpax_dprintf_impl.h
new file mode 100644
index 0000000..d83d0d3
--- /dev/null
+++ b/src/internal/tpax_dprintf_impl.h
@@ -0,0 +1,10 @@
+#ifndef TPAX_DPRINTF_IMPL_H
+#define TPAX_DPRINTF_IMPL_H
+
+#ifdef ARGV_DRIVER
+#define argv_dprintf tpax_dprintf
+#endif
+
+int tpax_dprintf(int fd, const char * fmt, ...);
+
+#endif
diff --git a/src/internal/tpax_driver_impl.h b/src/internal/tpax_driver_impl.h
new file mode 100644
index 0000000..49dea15
--- /dev/null
+++ b/src/internal/tpax_driver_impl.h
@@ -0,0 +1,112 @@
+/******************************************************/
+/* tpax: a topological pax implementation */
+/* Copyright (C) 2020 Z. Gilboa */
+/* Released under GPLv2 and GPLv3; see COPYING.TPAX. */
+/******************************************************/
+
+#ifndef TPAX_DRIVER_IMPL_H
+#define TPAX_DRIVER_IMPL_H
+
+#include <stdint.h>
+#include <stdio.h>
+#include <sys/types.h>
+
+#include <tpax/tpax.h>
+#include "tpax_dprintf_impl.h"
+#include "argv/argv.h"
+
+#define TPAX_OPTV_ELEMENTS 64
+
+extern const struct argv_option tpax_default_options[];
+
+enum app_tags {
+ TAG_HELP,
+ TAG_VERSION,
+};
+
+struct tpax_driver_ctx_impl {
+ struct tpax_common_ctx cctx;
+ struct tpax_driver_ctx ctx;
+ struct tpax_fd_ctx fdctx;
+ const struct tpax_unit_ctx * euctx;
+ const char * eunit;
+ struct tpax_error_info ** errinfp;
+ struct tpax_error_info ** erricap;
+ struct tpax_error_info * erriptr[64];
+ struct tpax_error_info erribuf[64];
+};
+
+struct tpax_unit_ctx_impl {
+ const char * path;
+ struct tpax_unit_ctx uctx;
+};
+
+
+static inline struct tpax_driver_ctx_impl * tpax_get_driver_ictx(
+ const struct tpax_driver_ctx * dctx)
+{
+ uintptr_t addr;
+
+ if (dctx) {
+ addr = (uintptr_t)dctx - offsetof(struct tpax_driver_ctx_impl,ctx);
+ return (struct tpax_driver_ctx_impl *)addr;
+ }
+
+ return 0;
+}
+
+static inline void tpax_driver_set_ectx(
+ const struct tpax_driver_ctx * dctx,
+ const struct tpax_unit_ctx * uctx,
+ const char * unit)
+{
+ struct tpax_driver_ctx_impl * ictx;
+
+ ictx = tpax_get_driver_ictx(dctx);
+ ictx->euctx = uctx;
+ ictx->eunit = unit;
+}
+
+static inline int tpax_driver_fdin(const struct tpax_driver_ctx * dctx)
+{
+ struct tpax_fd_ctx fdctx;
+ tpax_get_driver_fdctx(dctx,&fdctx);
+ return fdctx.fdin;
+}
+
+static inline int tpax_driver_fdout(const struct tpax_driver_ctx * dctx)
+{
+ struct tpax_fd_ctx fdctx;
+ tpax_get_driver_fdctx(dctx,&fdctx);
+ return fdctx.fdout;
+}
+
+static inline int tpax_driver_fderr(const struct tpax_driver_ctx * dctx)
+{
+ struct tpax_fd_ctx fdctx;
+ tpax_get_driver_fdctx(dctx,&fdctx);
+ return fdctx.fderr;
+}
+
+static inline int tpax_driver_fdlog(const struct tpax_driver_ctx * dctx)
+{
+ struct tpax_fd_ctx fdctx;
+ tpax_get_driver_fdctx(dctx,&fdctx);
+ return fdctx.fdlog;
+}
+
+static inline int tpax_driver_fdcwd(const struct tpax_driver_ctx * dctx)
+{
+ struct tpax_fd_ctx fdctx;
+ tpax_get_driver_fdctx(dctx,&fdctx);
+ return fdctx.fdcwd;
+}
+
+static inline int tpax_driver_fddst(const struct tpax_driver_ctx * dctx)
+{
+ struct tpax_fd_ctx fdctx;
+ tpax_get_driver_fdctx(dctx,&fdctx);
+ return fdctx.fddst;
+}
+
+#endif
diff --git a/src/internal/tpax_errinfo_impl.c b/src/internal/tpax_errinfo_impl.c
new file mode 100644
index 0000000..b610869
--- /dev/null
+++ b/src/internal/tpax_errinfo_impl.c
@@ -0,0 +1,45 @@
+/******************************************************/
+/* tpax: a topological pax implementation */
+/* Copyright (C) 2020 Z. Gilboa */
+/* Released under GPLv2 and GPLv3; see COPYING.TPAX. */
+/******************************************************/
+
+#include <tpax/tpax.h>
+#include "tpax_driver_impl.h"
+#include "tpax_errinfo_impl.h"
+
+int tpax_record_error(
+ const struct tpax_driver_ctx * dctx,
+ int esyscode,
+ int elibcode,
+ const char * efunction,
+ int eline,
+ unsigned eflags,
+ void * eany)
+{
+ struct tpax_driver_ctx_impl * ictx;
+ struct tpax_error_info * erri;
+
+ ictx = tpax_get_driver_ictx(dctx);
+
+ if (ictx->errinfp == ictx->erricap)
+ return -1;
+
+ *ictx->errinfp = &ictx->erribuf[ictx->errinfp - ictx->erriptr];
+ erri = *ictx->errinfp;
+
+ erri->euctx = ictx->euctx;
+ erri->eunit = ictx->eunit;
+
+ erri->edctx = dctx;
+ erri->esyscode = esyscode;
+ erri->elibcode = elibcode;
+ erri->efunction = efunction;
+ erri->eline = eline;
+ erri->eflags = eflags;
+ erri->eany = eany;
+
+ ictx->errinfp++;
+
+ return -1;
+}
diff --git a/src/internal/tpax_errinfo_impl.h b/src/internal/tpax_errinfo_impl.h
new file mode 100644
index 0000000..d85d159
--- /dev/null
+++ b/src/internal/tpax_errinfo_impl.h
@@ -0,0 +1,80 @@
+/******************************************************/
+/* tpax: a topological pax implementation */
+/* Copyright (C) 2020 Z. Gilboa */
+/* Released under GPLv2 and GPLv3; see COPYING.TPAX. */
+/******************************************************/
+
+#include <errno.h>
+#include <tpax/tpax.h>
+
+int tpax_record_error(
+ const struct tpax_driver_ctx *,
+ int esyscode,
+ int elibcode,
+ const char * efunction,
+ int eline,
+ unsigned eflags,
+ void * ectx);
+
+#define TPAX_SYSTEM_ERROR(dctx) \
+ tpax_record_error( \
+ dctx, \
+ errno, \
+ 0, \
+ __func__, \
+ __LINE__, \
+ TPAX_ERROR_TOP_LEVEL, \
+ 0)
+
+#define TPAX_BUFFER_ERROR(dctx) \
+ tpax_record_error( \
+ dctx, \
+ ENOBUFS, \
+ 0, \
+ __func__, \
+ __LINE__, \
+ TPAX_ERROR_TOP_LEVEL, \
+ 0)
+
+#define TPAX_SPAWN_ERROR(dctx) \
+ tpax_record_error( \
+ dctx, \
+ errno, \
+ 0, \
+ __func__, \
+ __LINE__, \
+ TPAX_ERROR_TOP_LEVEL \
+ | (errno ? 0 \
+ : TPAX_ERROR_CHILD), \
+ 0)
+
+#define TPAX_FILE_ERROR(dctx) \
+ tpax_record_error( \
+ dctx, \
+ EIO, \
+ 0, \
+ __func__, \
+ __LINE__, \
+ TPAX_ERROR_TOP_LEVEL, \
+ 0)
+
+#define TPAX_CUSTOM_ERROR(dctx,elibcode) \
+ tpax_record_error( \
+ dctx, \
+ 0, \
+ elibcode, \
+ __func__, \
+ __LINE__, \
+ TPAX_ERROR_TOP_LEVEL \
+ | TPAX_ERROR_CUSTOM, \
+ 0)
+
+#define TPAX_NESTED_ERROR(dctx) \
+ tpax_record_error( \
+ dctx, \
+ 0, \
+ 0, \
+ __func__, \
+ __LINE__, \
+ TPAX_ERROR_NESTED, \
+ 0)
diff --git a/src/internal/tpax_readlink_impl.h b/src/internal/tpax_readlink_impl.h
new file mode 100644
index 0000000..328b302
--- /dev/null
+++ b/src/internal/tpax_readlink_impl.h
@@ -0,0 +1,31 @@
+/******************************************************/
+/* tpax: a topological pax implementation */
+/* Copyright (C) 2020 Z. Gilboa */
+/* Released under GPLv2 and GPLv3; see COPYING.TPAX. */
+/******************************************************/
+
+#ifndef TPAX_READLINK_IMPL_H
+#define TPAX_READLINK_IMPL_H
+
+#include <unistd.h>
+#include <errno.h>
+
+static inline int tpax_readlink(
+ const char * restrict path,
+ char * restrict buf,
+ ssize_t bufsize)
+{
+ ssize_t ret;
+
+ if ((ret = readlink(path,buf,bufsize)) <= 0) {
+ return -1;
+ } else if (ret == bufsize) {
+ errno = ENOBUFS;
+ return -1;
+ } else {
+ buf[ret] = 0;
+ return 0;
+ }
+}
+
+#endif
diff --git a/src/output/tpax_output_error.c b/src/output/tpax_output_error.c
new file mode 100644
index 0000000..69c4938
--- /dev/null
+++ b/src/output/tpax_output_error.c
@@ -0,0 +1,230 @@
+/******************************************************/
+/* tpax: a topological pax implementation */
+/* Copyright (C) 2020 Z. Gilboa */
+/* Released under GPLv2 and GPLv3; see COPYING.TPAX. */
+/******************************************************/
+
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <tpax/tpax.h>
+
+#include "tpax_driver_impl.h"
+#include "tpax_dprintf_impl.h"
+
+static const char aclr_reset[] = "\x1b[0m";
+static const char aclr_bold[] = "\x1b[1m";
+
+static const char aclr_red[] = "\x1b[31m";
+static const char aclr_green[] = "\x1b[32m";
+static const char aclr_blue[] = "\x1b[34m";
+static const char aclr_magenta[] = "\x1b[35m";
+
+static const char * const tpax_error_strings[TPAX_ERR_CAP] = {
+ [TPAX_ERR_FLOW_ERROR] = "flow error: unexpected condition or other",
+ [TPAX_ERR_FLEE_ERROR] = "flees and bugs and cats and mice",
+ [TPAX_ERR_NULL_CONTEXT] = "null driver or unit context",
+ [TPAX_ERR_BAD_DATA] = "corrupt or wrong daata",
+};
+
+static const char * tpax_output_error_header(const struct tpax_error_info * erri)
+{
+ if (erri->eflags & TPAX_ERROR_CHILD)
+ return "exec error upon";
+
+ else if (erri->eflags & TPAX_ERROR_TOP_LEVEL)
+ return "error logged in";
+
+ else if (erri->eflags & TPAX_ERROR_NESTED)
+ return "< returned to >";
+
+ else
+ return "distorted state";
+}
+
+static const char * tpax_output_unit_header(const struct tpax_error_info * erri)
+{
+ if (!(erri->eflags & TPAX_ERROR_CUSTOM))
+ return "while opening";
+
+ else
+ return "while parsing";
+}
+
+static const char * tpax_output_strerror(
+ const struct tpax_error_info * erri,
+ char (*errbuf)[256])
+{
+ if (erri->eflags & TPAX_ERROR_CUSTOM)
+ return ((erri->elibcode < 0) || (erri->elibcode >= TPAX_ERR_CAP))
+ ? "internal error: please report to the maintainer"
+ : tpax_error_strings[erri->elibcode];
+
+ else if (erri->eflags & TPAX_ERROR_NESTED)
+ return "";
+
+ else if (erri->eflags & TPAX_ERROR_CHILD)
+ return "(see child process error messages)";
+
+ else if (erri->esyscode == ENOBUFS)
+ return "input error: string length exceeds buffer size";
+
+ else
+ return strerror_r(erri->esyscode,*errbuf,sizeof(*errbuf))
+ ? "internal error: strerror_r(3) call failed"
+ : *errbuf;
+
+}
+
+static int tpax_output_error_record_plain(
+ const struct tpax_driver_ctx * dctx,
+ const struct tpax_error_info * erri)
+{
+ const char * epath;
+ char errbuf[256];
+
+ int fderr = tpax_driver_fderr(dctx);
+ const char * errdesc = tpax_output_strerror(erri,&errbuf);
+
+ epath = erri->euctx
+ ? *erri->euctx->path
+ : erri->eunit;
+
+ if (epath && !(erri->eflags & TPAX_ERROR_NESTED))
+ if (tpax_dprintf(
+ fderr,
+ "%s: [%s] '%s':\n",
+ dctx->program,
+ tpax_output_unit_header(erri),
+ epath) < 0)
+ return -1;
+
+ if (tpax_dprintf(
+ fderr,
+ "%s: %s %s(), line %d%s%s.\n",
+ dctx->program,
+ tpax_output_error_header(erri),
+ erri->efunction,
+ erri->eline,
+ strlen(errdesc) ? ": " : "",
+ errdesc) < 0)
+ return -1;
+
+ return 0;
+}
+
+static int tpax_output_error_record_annotated(
+ const struct tpax_driver_ctx * dctx,
+ const struct tpax_error_info * erri)
+{
+ const char * epath;
+ char errbuf[256];
+
+ int fderr = tpax_driver_fderr(dctx);
+ const char * errdesc = tpax_output_strerror(erri,&errbuf);
+
+ epath = erri->euctx
+ ? *erri->euctx->path
+ : erri->eunit;
+
+ if (epath && !(erri->eflags & TPAX_ERROR_NESTED))
+ if (tpax_dprintf(
+ fderr,
+ "%s%s%s:%s %s[%s]%s %s%s'%s'%s:\n",
+
+ aclr_bold,aclr_magenta,
+ dctx->program,
+ aclr_reset,
+
+ aclr_bold,
+ tpax_output_unit_header(erri),
+ aclr_reset,
+
+ aclr_bold,aclr_red,
+ epath,
+ aclr_reset) < 0)
+ return -1;
+
+ if (tpax_dprintf(
+ fderr,
+ "%s%s%s:%s %s%s%s %s%s%s()%s, %s%sline %d%s%s%s%s%s.\n",
+
+ aclr_bold,aclr_magenta,
+ dctx->program,
+ aclr_reset,
+
+ aclr_bold,
+ tpax_output_error_header(erri),
+ aclr_reset,
+
+ aclr_bold,aclr_blue,
+ erri->efunction,
+ aclr_reset,
+
+ aclr_bold,aclr_green,
+ erri->eline,
+ aclr_reset,
+ strlen(errdesc) ? ": " : "",
+
+ aclr_bold,
+ errdesc,
+ aclr_reset) < 0)
+ return -1;
+
+ return 0;
+}
+
+int tpax_output_error_record(
+ const struct tpax_driver_ctx * dctx,
+ const struct tpax_error_info * erri)
+{
+ if (dctx->cctx->drvflags & TPAX_DRIVER_ANNOTATE_NEVER)
+ return tpax_output_error_record_plain(dctx,erri);
+
+ else if (dctx->cctx->drvflags & TPAX_DRIVER_ANNOTATE_ALWAYS)
+ return tpax_output_error_record_annotated(dctx,erri);
+
+ else if (isatty(tpax_driver_fderr(dctx)))
+ return tpax_output_error_record_annotated(dctx,erri);
+
+ else
+ return tpax_output_error_record_plain(dctx,erri);
+}
+
+static int tpax_output_error_vector_plain(const struct tpax_driver_ctx * dctx)
+{
+ struct tpax_error_info ** perr;
+
+ for (perr=dctx->errv; *perr; perr++)
+ if (tpax_output_error_record_plain(dctx,*perr))
+ return -1;
+
+ return 0;
+}
+
+static int tpax_output_error_vector_annotated(const struct tpax_driver_ctx * dctx)
+{
+ struct tpax_error_info ** perr;
+
+ for (perr=dctx->errv; *perr; perr++)
+ if (tpax_output_error_record_annotated(dctx,*perr))
+ return -1;
+
+ return 0;
+}
+
+int tpax_output_error_vector(const struct tpax_driver_ctx * dctx)
+{
+ if (dctx->cctx->drvflags & TPAX_DRIVER_ANNOTATE_NEVER)
+ return tpax_output_error_vector_plain(dctx);
+
+ else if (dctx->cctx->drvflags & TPAX_DRIVER_ANNOTATE_ALWAYS)
+ return tpax_output_error_vector_annotated(dctx);
+
+ else if (isatty(tpax_driver_fderr(dctx)))
+ return tpax_output_error_vector_annotated(dctx);
+
+ else
+ return tpax_output_error_vector_plain(dctx);
+}
diff --git a/src/skin/tpax_skin_default.c b/src/skin/tpax_skin_default.c
new file mode 100644
index 0000000..c969ff3
--- /dev/null
+++ b/src/skin/tpax_skin_default.c
@@ -0,0 +1,12 @@
+#include "tpax_driver_impl.h"
+#include "argv/argv.h"
+
+const struct argv_option tpax_default_options[] = {
+ {"version", 0,TAG_VERSION,ARGV_OPTARG_NONE,0,0,0,
+ "show version information"},
+
+ {"help", 0,TAG_HELP,ARGV_OPTARG_OPTIONAL,0,"short|long",0,
+ "show usage information [listing %s options only]"},
+
+ {0,0,0,0,0,0,0,0}
+};
diff --git a/src/tpax.c b/src/tpax.c
new file mode 100644
index 0000000..a2af3b7
--- /dev/null
+++ b/src/tpax.c
@@ -0,0 +1,12 @@
+/******************************************************/
+/* tpax: a topological pax implementation */
+/* Copyright (C) 2020 Z. Gilboa */
+/* Released under GPLv2 and GPLv3; see COPYING.TPAX. */
+/******************************************************/
+
+#include <tpax/tpax.h>
+
+int main(int argc, char ** argv, char ** envp)
+{
+ return tpax_main(argv,envp,0);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 11:53:16 +0000