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$FreeBSD$
.Dd August 27, 2006 .Dt GELF_UPDATE_EHDR 3 .Os .Sh NAME .Nm gelf_update_ehdr , .Nm gelf_update_phdr , .Nm gelf_update_shdr .Nd update underlying ELF data structures .Sh LIBRARY .Lb libelf .Sh SYNOPSIS n gelf.h .Ft int .Fn gelf_update_ehdr "Elf *elf" "GElf_Ehdr *ehdr" .Ft int .Fn gelf_update_phdr "Elf *elf" "int ndx" "GElf_Phdr *phdr" .Ft int .Fn gelf_update_shdr "Elf_Scn *scn" "GElf_Shdr *shdr" .Sh DESCRIPTION These functions are used to update ELF data structures on the underlying ELF descriptor. Class-dependent data structures in the underlying ELF descriptor are updated using the data in the class-independent GElf descriptors and the underlying ELF data structures are marked .Dq dirty . The conversion process signals an error if the values being copied to the target ELF data structure would exceed representation limits. GElf descriptors are described in .Xr gelf 3 .
p Function .Fn gelf_update_ehdr updates the ELF Executable Header with the values in the class-independent executable header .Ar ehdr .
p Function .Fn gelf_update_phdr updates the ELF Program Header structure at index .Ar ndx with the values in the class-independent program header .Ar phdr .
p Function .Fn gelf_update_shdr updates the ELF Section Header structure associated with section descriptor .Ar scn with the values in argument .Ar shdr . .Sh RETURN VALUES These functions return a non-zero integer on success, or zero in case of an error. .Sh ERRORS These functions may fail with the following errors: l -tag -width "[ELF_E_RESOURCE]" t Bq Er ELF_E_ARGUMENT Arguments .Ar elf , .Ar ehdr , .Ar phdr , .Ar scn , or .Ar shdr were NULL. t Bq Er ELF_E_ARGUMENT Argument .Ar elf was not a descriptor for an ELF object. t Bq Er ELF_E_ARGUMENT Argument .Ar elf had an unsupported ELF class. t Bq Er ELF_E_ARGUMENT Argument .Ar ndx exceeded the number of entries in the program header table. t Bq Er ELF_E_ARGUMENT Section descriptor .Ar scn was not associated with an ELF descriptor. t Bq Er ELF_E_MODE ELF descriptor .Ar elf was not opened for writing or updating. t Bq Er ELF_E_RESOURCE An out of memory condition was detected. .El .Sh SEE ALSO .Xr elf 3 , .Xr elf_flagelf 3 , .Xr elf_flagphdr 3 , .Xr elf_flagshdr 3 , .Xr gelf 3 , .Xr gelf_getehdr 3 , .Xr gelf_getphdr 3 , .Xr gelf_getshdr 3